minor readability edits to README
Update README.md
IE10+ text shadow fix

ie text shadow fix using filter now looks the same in every browser even
ie 9+
Merge pull request #22 from jay754/master

Text Shadow fix IE9+
Update README.md

Add introjs-rails gem to use with ruby on rails asset pipeline.
Merge pull request #17 from heelhook/patch-1

Update README.md
Update README.md
Update README.md
Update README.md
Add IntroJs-Yii link
Update roadmap
Add history + add demo picture of IntroJs
CSS linting, formatting.