Update openssl on Travis before installing

Trying to fix problems with ruby 2.1.1 not installing.
Rollback attempt to install openssl

It did not work, but left it as code comments.
Try using ruby 2.0.0
Try skipping rvm all together
Remove code comments re: installing openssl
Disable chou cucumber tests

The Travis CI CoreSimulator env is not stable enough for
Calabash testing.
Enable dylib testing on Travis CI

Xcode 6 supports dylib targets.
Add clarifying comment about Travis CI ruby version
Disable dylibs tests; requires code-signing

Despite trying in the past, I have never had success setting
up code signing on Travis CI.
Merge pull request #74 from calabash/feature/stablize-travis-ci-xcode6

Stabilize Travis CI for Xcode 6