fixed #94 reversal of file transfer order by using shift() to get first element rather than pop() which gets last element of array
also send groups of files offered in correct order by switching to shift()
Merge pull request #102 from ilovett/fix-file-transfer-order

Fix file transfer order
refactored `extensionInstaller` to `chromeInstaller`

added requirement for `<link>` tag pointing to chrome webstore extension (required by chrome webstore)

simplified chromeInstaller call  to use custom id of required `<link>` rather than chrome webstore id
clarified why `link` tag is required
Merge pull request #104 from ilovett/improve-chrome-installer

Improve chrome installer
Added some more flags to the demo_audio_video demo.
Applied a bug fix to filesharing demo supplied by vendredi67
Merge branch 'beta' of https://github.com/priologic/easyrtc into beta
Added getConnectionCount() and getConnectionCountSync() functions to pub, app, and room objects. Fixes #105