Fixed doc typos in Mix.Projects and Mix.Utils
Merge pull request #1468 from jwarwick/mix_typos

Fixed doc typos in Mix.Projects and Mix.Utils
Add String.reverse to reverse the given string.
Merge pull request #1460 from guilleiguaran/string_reverse

Add String.reverse to reverse the given string.
Updated windows elixir.bat to use -pa instead of -env ERL_LIBS

Fixes #1469
Merge pull request #1470 from ToJans/master

Updated windows elixir.bat to use -pa instead of -env ERL_LIBS