docs(ISSUE_TEMPLATE): restructuring issue template to only display needed info

Author: jshcrowthe

.github/ISSUE_TEMPLATE.md

@@ -1,5 +1,6 @@
-### [READ] Step 1: Are you in the right place?
-
+<!-- Step 1 [READ THIS] -->
+<!--
+Are you in the right place?
   * For issues or feature requests related to __the code in this repository__
     file a Github issue.
     * If this is a __feature request__ make sure the issue title starts with "FR:".
@@ -10,15 +11,19 @@
   * For help troubleshooting your application that does not fall under one
     of the above categories, reach out to the personalized
     [Firebase support channel](https://firebase.google.com/support/).
+-->
 
-### [REQUIRED] Step 2: Describe your environment
+<!-- Step 2 [REQUIRED] -->
+
+### Describe your environment
 
   * Operating System version: _____
   * Firebase SDK version: _____
-  * Library version: _____
   * Firebase Product: _____ (auth, database, storage, etc)
 
-### [REQUIRED] Step 3: Describe the problem
+<!-- Step 3 [REQUIRED] -->
+
+### Describe the problem
 
 #### Steps to reproduce:
 <!--