Merge tag '1.11.0' into develop

Release 1.11.0 - Notes from CHANGELOG.md

1.11.0
------
- Display Advertising (dc.js) support (9d4bb3e)
- Build system moved to Grunt (f3921fc)
- Removed _sanitizeString helper function (e042350)
- Outbound events are non-interactive now (9585c4e)
- Allow negative event values (ce4515c)
- Don't push GAS functions inside _gaq. (18c5e79)
- Extra checks on the live handler, fixes issue with ie8 (ae1d554)

* tag '1.11.0':
  1.11.0 version bump and changelog
1.11.0 released - readme update
Merge branch 'master' into develop

* master:
  1.11.0 -- dc.js support snippet in README more apparent
  add _gasTrackVideo and _gasTrackAudio to README closes #27
  1.11.0 released - readme update
Merge pull request #57 from CardinalPath/develop

1.11.0 - merge develop into master