Merge pull request #17 from Livefyre/rc2

Rc2
Merge pull request #18 from Livefyre/rc2

Rc2
Merge pull request #19 from Livefyre/rc2

Add license terms
Merge pull request #20 from Livefyre/rc2

Rc2
Merge pull request #21 from Livefyre/rc2

Update SDK version in podspec
Merge pull request #22 from Livefyre/rc2

Add content source types, update CLI build script
Merge pull request #23 from Livefyre/rc2

Standardize naming: LFSContentInstagram -> LFSContentSourceInstagram
Merge pull request #24 from Livefyre/rc2

When formatting relative dates, use "0s"
Merge pull request #25 from Livefyre/rc2

Add runtime bounds checking for certain parameter types
Merge pull request #26 from Livefyre/rc2

Add a test case
Merge branch 'master' of https://github.com/Livefyre/StreamHub-iOS-SDK into rc2