ADD: allcontributors suppport

Signed-off-by: Marcel <[email protected]>

.all-contributorsrc

@@ -0,0 +1,14 @@
+{
+  "projectName": "SportToolBox",
+  "projectOwner": "Segelzwerg",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": true,
+  "commitConvention": "none",
+  "contributors": [],
+  "contributorsPerLine": 7
+}

.gitignore

@@ -6,3 +6,4 @@ build/
 .gradle/
 
 out/
+/node_modules/

README.md

@@ -1,4 +1,7 @@
 # SportToolBox
+<!-- ALL-CONTRIBUTORS-BADGE:START - Do not remove or modify this section -->
+[![All Contributors](https://img.shields.io/badge/all_contributors-0-orange.svg?style=flat-square)](#contributors-)
+<!-- ALL-CONTRIBUTORS-BADGE:END -->
 [![Maintainability](https://api.codeclimate.com/v1/badges/280e62d048bcb77bf228/maintainability)](https://codeclimate.com/github/Segelzwerg/SportToolBox/maintainability) [![Build Status](https://travis-ci.org/Segelzwerg/SportToolBox.svg?branch=master)](https://travis-ci.org/Segelzwerg/SportToolBox)[![Total alerts](https://img.shields.io/lgtm/alerts/g/Segelzwerg/SportToolBox.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/Segelzwerg/SportToolBox/alerts/)[![Language grade: Java](https://img.shields.io/lgtm/grade/java/g/Segelzwerg/SportToolBox.svg?logo=lgtm&logoWidth=18)](https://lgtm.com/projects/g/Segelzwerg/SportToolBox/context:java)[![Heroku](https://heroku-badge.herokuapp.com/?app=sporttoolbox)]
 
 ## About
@@ -11,3 +14,16 @@ The first feature is a simple speed calculator that accepts distance in km or m
 ## Contributing to SportToolBox
 
 Please see [CONTRIBUTING.md](CONTRIBUTING.md)
+
+## Contributors ✨
+
+Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<!-- markdownlint-enable -->
+<!-- prettier-ignore-end -->
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!

package.json

@@ -0,0 +1,5 @@
+{
+  "devDependencies": {
+    "all-contributors-cli": "^6.11.1"
+  }
+}