Added option Culture parameter to DateTime.Humanize
Fixed formatting
Reverted changes to DateHumanize (testing with both implicit & explicit culture)
Added a test for getting culture-specific resource with explicitly specified culture
Fixed method's comment
Only using optional "Culture" parameter for public methods
+ unit tests for DateTime.Humanize with explicit culure
Updated readme to reflect new "culture" parameter for DateTime.Humanize
Updated release_notes to reflect new "culture" parameter for DateTime.Humanize
Added optional Culture parameter to TimeSpan.Humanize
1) Made Date/Time formatters to own "culture";
2) Explicitly registering DefaultFormatter's for the supported languages in FormatterRegistry's constructor
Merge remote-tracking branch 'remotes/upstream/master'

Conflicts:
	readme.md
	src/Humanizer.Tests/ApiApprover/PublicApiApprovalTest.approve_public_api.approved.txt
	src/Humanizer.Tests/DateHumanizeDefaultStrategyTests.cs
	src/Humanizer.Tests/TimeSpanHumanizeTests.cs
	src/Humanizer/Configuration/FormatterRegistry.cs
	src/Humanizer/Configuration/LocaliserRegistry.cs
NumberToWords: added support for the explicit culture
Fixed NumberToWords sample
Using real "Culture" object with NumberToWords converters
Small fixes during code review
Fixed comment
Merge pull request #300 from dmitry-gokun/master

Added optional Culture parameter to NumberToWords