Moved template guidelines to contributing guide

Author: corneliusyaovi

.github/ISSUE_TEMPLATE/bug_report.md

@@ -13,33 +13,21 @@ Do you want to ask a question? Are you looking for support? The developer slack
 
 ### Description
 
-<!-- Description of the issue -->
 
 ### Steps to Reproduce
 
-1. <!-- First Step -->
-2. <!-- Second Step -->
-3. <!-- and so on… -->
 
 **Expected behaviour:**
 
-<!-- What you expect to happen -->
 
 **Actual behaviour:**
 
-<!-- What actually happens -->
 
 **Reproduces how often:**
 
-<!-- What percentage of the time does it reproduce? -->
 
 ### Configuration
 
-- API Version: <!-- v2 or v3 -->
-- Environment: <!-- test mode or live mode  -->
-- Browser: <!-- [all | Chrome XX | Firefox XX | IE XX | Safari XX | Mobile Chrome XX | Android X.X Web Browser | iOS XX Safari | iOS XX UIWebView | iOS XX WKWebView ]  -->
-- Language: <!-- [all | Node X.X | TypeScript X.X | Python X.X | ES6/7 | ES5 | Dart | Android X.X | PHP X.X | Laravel X.X ]  -->
 
 ### Additional Information
 
-<!-- Any additional information, configuration or data that might be necessary to reproduce the issue e.g. detailed explanation, stack traces, related issues, suggestions on how to fix, links for us to have more context like StackOverflow, Gitter, etc. -->