CI script can indicate pass on failure

Actual Behavior & Analysis

While working on other bash scripts, I noticed a small bug in .travis.yml. It checks for success with:

But this will match any failure count that ends in 0, to illustrate problem:

Fix

Match to start of line with ^, to illustrate fix:

Testing notes

1. fork clojurescript

2. setup to build fork on Travis CI

3. create CLJS-3114 branch

4. push branch with no changes

5. witness successful build - https://travis-ci.org/lread/clojurescript/builds/550999841#L3140

6. push CLJS-3114 with fix as described above

7. witness sucessful build - https://travis-ci.org/lread/clojurescript/builds/551009119#L3140