fold build output in travis-ci
fold build output in travis-ci

* 'cmake' and 'make' steps are folded to reduce visible output.
* Colored one-line summary of build result is printed.

ch1bo/lime-backend,ch1bo/lime-backend,limetext/lime-backend,bj7/lime-backend,ch1bo/lime-backend,bj7/lime-backend,codex8/lime-backend,codex8/lime-backend,ch1bo/lime-backend,codex8/lime-backend,bj7/lime-backend,limetext/lime-backend,limetext/backend,limetext/lime-backend,limetext/lime-backend,codex8/lime-backend,bj7/lime-backend