Improvements for 1.8 support

* set unicode mode in railtie too;
* clean up Ukrainian transliteration;
* add 1.8.7 and 1.9.3 MRI to the Travis config.
Make .travis.yml valid
Bump version to 0.6.2
Updated "See also" section of README.md
Update MIT-LICENSE.txt
Update i18n-spec
Corrected en-IN.yml
Replace "Rs" with "₹" of en-In.yml (#218)
Update Hebrew plural rule
Bump version to 0.6.3
croatian pluralizations
Merge pull request #221 from dmilisic/master

Pluralization fixes for croatian (hr.yml)
added wolof from Sénégal West Africa
add wolof to the list on README.md
Change the localization of dates to Croatian in hr.yml
Merge pull request #223 from janko-m/master

Changed the localization of dates to Croatian in hr.yml
match he pluralization to translations
Merge pull request #224 from astrails/master

match he pluralization to translations
Revert "match he pluralization to translations"

This reverts commit 216db00c1e3bd0c8c4276530650cbae857c32a43.
fix tests