   Newcomers_Guide.rst: Single PR for an issue
   Newcomers_Guide.rst: Single PR for an issue

   In step 5, there are a few new paragraphs outlining why
   it is of the utmost importance that all the commits
   required for solving an issue should be included in
   only one Pull Request.

   Closes https://github.com/coala/coala/issues/4770

jayvdb/coala,coala/coala,jayvdb/coala,coala-analyzer/coala,SanketDG/coala,coala-analyzer/coala,coala-analyzer/coala,SanketDG/coala,coala/coala,jayvdb/coala,SanketDG/coala,coala/coala