Novas instrucoes para contribuidores

Author: Guto Carvalho

CONTRIBUTING.md

@@ -1,7 +1,16 @@
 # CONTRIBUTING
 
-* Don't send code without check with puppet parser validate
-* Don't send code without check with puppet lint
-  * Don't send yaml file without check the file
+## Code
+
+* Don't submit code without check manifests with puppet parser validate
+* Don't submit code without check manifests with puppet lint
+  * Don't submit yaml files without the proper validation
 * Put vars always on top of the manifest file
-* Hiera lookups should be used only in profile class
+* Hiera lookups should be used only in profile classes
+
+## Commits
+
+* Make commits of logical units.
+* Check for unnecessary whitespace with "git diff --check" before committing.
+* Commit using Unix line endings (check the settings around "crlf" in git-config(1)).
+* The first line of the commit message should be a short description (50 characters is the soft limit, excluding ticket number(s)), and should skip the full stop.