Release version Tropo 2.2.1

Squashed commit of the following:

commit 781101f245530279270e8ee4be10e64f034e464c
Merge: 171c028 3e531ab
Author: Radko Georgiev <raddock@abv.bg>
Date:   Tue Nov 5 17:21:05 2013 +0200

    Merge branch 'future_release' of https://github.com/developergarden/tropo-webapi-php into future_release

commit 171c0286c7ec7c7258f2e2175f888a896acdb750
Author: Radko Georgiev <raddock@abv.bg>
Date:   Tue Nov 5 17:16:11 2013 +0200

    "record" method updated with transcription language parameter & sample added
    Issue 118735

commit 3e531ab8f8547f8422d427e5cb055b28046627da
Author: Blagovest Tranchev <blagovest.trenchev@musala.com>
Date:   Tue Nov 5 10:49:48 2013 +0200

    Fixed a few links.

commit 213d46d1bb1fac8dfa2f43eabf5629ed18b2944f
Author: Radko Georgiev <raddock@abv.bg>
Date:   Mon Nov 4 16:18:26 2013 +0200

    Issue 119613:
    Fix for % usage