Update README, CONTRIBUTING and templates

.github/bug_report.md

@@ -4,7 +4,7 @@
 
 A clear and concise description of what the bug is.
 
-### To Reproduce
+### How to Reproduce
 
 Steps to reproduce the behavior:
 

.github/feature_request.md

@@ -1,5 +1,11 @@
 # Feature Request Template
 
+### What is the nature of this request?
+
+* New functionalities
+* Change in standards
+* Change in source code details (names of variables, functions, parameters, etc)
+
 ### Is your feature request related to a problem? Please describe.
 
 A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]