Summary:
Before this PR, travis used to build sample app which used a tagged release of SonarKit and Sonar. So travis used to never check the source code in master branch. This PR, instead uses local podspecs, which refers to the local source code, and thus travis would be testing the local source code.
Solves #237
Pull Request resolved: https://github.com/facebook/flipper/pull/244
Reviewed By: passy
Differential Revision: D9394955
Pulled By: priteshrnandgaonkar
fbshipit-source-id: 7109a8baaeb8ff7e14d19ebe1d7c3bcb7e4bebd2