doc: updating readme (microsoft#733)

* update Readme.md and Contributing.md
* remove markdown-toc
* new screenshots ( jpg )
* add mouse and keyboard shortcuts from vott-ct

#AB17930

Author: mydiemho

CONTRIBUTING.md

@@ -1,50 +1,55 @@
 # Contributing to VoTT
+
 We welcome [issues](https://github.com/Microsoft/VoTT/issues) and [pull requests](https://github.com/Microsoft/VoTT/pulls) into the project. We ask that you follow these simple guidelines:
 
+<!-- generated using: https://www.npmjs.com/package/markdown-toc-->
+<!-- command: `markdown-toc -i CONTRIBUTING.md --bullets "*"`-->
+
 <!-- toc -->
 
-- [Issues](#issues)
-- [Pull Requests](#pull-requests)
-- [Commit Message Guidelines](#commit-message-guidelines)
-  - [Commit Message Format](#commit-message-format)
-  - [Header](#header)
-    - [Type](#type)
-    - [Short Description](#short-description)
-  - [Body](#body)
-  - [Footer](#footer)
-  - [Commit Message Example](#commit-message-example)
-- [Style](#style)
+* [Issues](#issues)
+* [Pull Requests](#pull-requests)
+* [Commit Message Guidelines](#commit-message-guidelines)
+  * [Commit Message Format](#commit-message-format)
+  * [Header](#header)
+    * [Type](#type)
+    * [Short Description](#short-description)
+  * [Body](#body)
+  * [Footer](#footer)
+  * [Commit Message Example](#commit-message-example)
+* [Style](#style)
 
 <!-- tocstop -->
 
 ## Issues
 
-- Look for duplicate issues & comment on thread if experiencing something similar
-- Fill in template information (platform, OS, version, screenshots, etc.)
+* Look for duplicate issues & comment on thread if experiencing something similar
+* Fill in template information (platform, OS, version, screenshots, etc.)
 
 ## Pull Requests
 
-1. Find an issue to work on, or create a new one
-2. Fork repo, make sure you have latest changes from `v2`
-3. Create branch following naming convention: `git checkout -b issue-<###>-<short-description>`.
-4. Write code
-5. Add unit tests
-6. Verify linting and unit tests by running `npm test`
-7. Update docs if needed
-8. Rebase on `v2` and resolve conflicts
-9. Commit your changes using a descriptive commit message that follows [our commit message conventions](#commit-message-guidelines). Adherence to these conventions is necessary because the [change log](CHANGELOG.md) is automatically generated from these messages.
-10. Submit PR to `v2` branch
+1. Find an issue to work on, or create a new one.
+1. Fork the repo and/or pull down the latest changes from `master`.
+1. Create branch following naming convention: `git checkout -b issue-<###>-<short-description>`.
+1. Write code.
+1. Add unit tests.
+1. Verify linting and unit tests by running `npm test`.
+1. Update docs if needed.
+1. Rebase on `master` and resolve conflicts.
+1. Commit your changes using a descriptive commit message that follows [our commit message conventions](#commit-message-guidelines). Adherence to these conventions is necessary for the [change log](CHANGELOG.md) to be automatically generated from these messages.
+1. Submit PR to `master` branch.
 
-Try to keep PRs small to decrease the time required to review and merge.
+Please try to keep PRs small to decrease the time required to review and merge.
 
 ## Commit Message Guidelines
-We have adopted standards similar to [Angular](https://github.com/angular/angular/blob/master/CONTRIBUTING.md#commit) for how our git commit messages should be formatted. We believe that this leads to more readable messages that are easier to follow when looking through the project history and in addition, are used to generate the [VoTT change log](CHANGELOG.md).
 
+We have adopted standards similar to [Angular](https://github.com/angular/angular/blob/master/CONTRIBUTING.md#commit) for how our git commit messages should be formatted. This leads to more readable messages, which are easier to follow when looking through the project history. Those messages are used to generate the [VoTT change log](CHANGELOG.md).
 
 ### Commit Message Format
+
 Each commit message consists of a **header**, a **body** and a **footer**.
 
-```
+```text
 <type>: <short description>
 <BLANK LINE>
 <body>
@@ -53,7 +58,9 @@ Each commit message consists of a **header**, a **body** and a **footer**.
 ```
 
 ### Header
+
 #### Type
+
 Must be one of the following:
 
 * **build**: Changes that affect the build system or external dependencies
@@ -67,32 +74,38 @@ Must be one of the following:
 * **test**: Adding missing tests or correcting existing tests
 
 #### Short Description
+
 Contains a succinct description of the change:
 
 * use the imperative, present tense: "change" not "changed" nor "changes"
 * don't capitalize the first letter
 * no dot (.) at the end
 
 ### Body
+
 Just as in the **short description**, use the imperative, present tense: "change" not "changed" nor "changes".
 The body should include the motivation for the change and contrast this with previous behavior.
 
 ### Footer
-The footer should contain any information about **Breaking Changes** and is also the place to
-reference Azure DevOps user stories/tasks or GitHub issues that this commit **Closes**.
+
+The footer should contain any information about **breaking changes** and is also the place to
+reference Azure DevOps user stories/tasks or GitHub issues that this commit **closes**.
 
 ### Commit Message Example
-```
+
+```text
 fix: add debouncing to asset scroller to correct browser scroll position
 
 There is no debouncing when we store the asset container's scroll position.
-This results in erratic, jumpy scrolling and a poor user experience. improve
+This results in erratic, jumpy scrolling and a poor user experience. Improve
 stability and usability with debouncing.
 
 AB#17056
 ```
 
 ## Style
 
-1. This repo uses [EditorConfig](https://editorconfig.org/) to maintain consistent styles across multiple platforms and IDEs., please refer to
+* This repo uses [EditorConfig](https://editorconfig.org/) to maintain consistent styles across multiple platforms and IDEs. Please refer to
    this [guide](docs/STYLE.md) for more information.
+
+Thank you!