chore(build.sh): fix travis build script

We were specifying browsers wrong, too many hyphens!

Closes #24
chore(karmalauncher): make karma launcher report errors to the shell.
chore(travis): don't build on IE10/11 (we don't have browsers configured there)
chore(karma.conf.js): use dots reporter by default

This should look a lot less messy on travis-ci...