Enable Travis CI

[kevincon]

@gali8, can you enable Travis CI for the repo so we can have continuous integration/testing for the library? Only the repository owner can enable it, otherwise I'd take care of it.

All you have to do is click this link: https://travis-ci.org/profile, sign in with your GitHub account, and then toggle the switch next to Tesseract-OCR-iOS so it says "On".

I'll take care of the rest (mainly writing the travis.yml file).

It will let us know within GitHub if a pull request someone submits builds the library successfully, and I can also start writing unit tests for the library that it can use to test the library anytime someone submits a new pull request.

[kevincon]

@gali8, I know you're busy with other projects but switching Travis CI support to "On" should only take a minute using the instructions I provided above. Let me know if you have any questions about how to do it.

[gali8]

ready!