Merge pull request #214 from Mystigan/master

Add a basic pull request template.

Author: Mystigan

.github/PULL_REQUEST_TEMPLATE/pull_request.md

@@ -0,0 +1,10 @@
+<!-- 
+Provide a brief description of fixes provided in this pull request
+(Tip: Focus on what and why instead of how).
+ Examples
+ - Added tests for x algorithm/program.
+ - Optimized implementation of y to improve time and/or space complexity.
+ - Added a new implementation for z algorithm/ z data structure.
+
+ Fixes #<mention_issue_number_here> 
+ -->