Feature/fix framework

[nacho4d]

Dear @germanattanasio

I have made 3 Main changes:

• Organized headers:
  • ogg internal headers had to be exposed (Now everything is hidden in OggHelper so less headers go to public :)
  • also hide SocketRocket.h (exposing it was not needed)
  • reflect those changes properly in an umbrella header "WatsonSDK.h"
• Fixed Framework build scripts and settings.
  • Enabled bitcode + fixes in the script in "Framework" target
  • Disabled script in "watsonsdk" target (Now "Framework" does all needed things)
• Updated binary (zip file) and README.md (since libopus and libogg are required they are mentioned now)

I hope these changes are welcomed ;]

BTW, since now we have a dynamic framework it is possible to adopt Carthage and/or CocoaPods (not a very big fan of the latter though).