Update demo link in Readme

Demo link in readme points to forked plnkr that makes use of ui-select v0.2.0 (from src) and demonstrates markup with updated directives
choices -> ui-select-choices
match -> ui-select-match
Escape key was not being handled when no items are found in a search.
Make select item active on popup close to have it highlighted the next time we open the popup
Reset activeIndex at the same time we reset search input (instead of when we close popup)
Use correct bower installation path in README.
fix angular animation
Merge pull request #83 from perry/patch-1

Use correct bower installation path in README.
Merge pull request #57 from duncanbeevers/patch-1

Update demo link in Readme
Merge pull request #67 from brettbatie/master

Escape key was not being handled when no items are found in a search.
Merge pull request #82 from bdelaforest/fix-active-item

Reset activeIndex on popup close in case we highlighted another choice without selecting it
chore(build): support for 'grunt watch' with grunt-contrib-watch
Merge pull request #87 from Hyzhak/master

fix angular animation
style(ngRequired): mark when invalid
fix(bower): limit angular version 1.2.0 - 1.2.17 until fix for 1.2.18+ is merged
Merge pull request #95 from angular-ui/fix-incompatible-ng

fix(bower): limit angular version 1.2.0 - 1.2.17 until fix for 1.2.18+ is merged
chore(travis): svg build status badge
fix(choices): changes transclusion for choices. Compatible with Angular v1.2.18+
fix(bower): add support for angular ~1.2 again
Merge pull request #91 from angular-ui/fix-transclude

Fixes transclusion on angular v1.2.18+
Merge pull request #94 from angular-ui/chore-gruntwatch

chore(build): support for 'grunt watch' with grunt-contrib-watch