Fix tests failing with .bin/karma: No such file or directory

[romario333]

I try to run tests like this:

npm install
make test

It fails with:

==> [Test :: Karma (PhantomJS)]
make: ./node_modules/.bin/karma: No such file or directory
make: *** [test-phantom] Error 1

Using karma version 0.10.x instead of canary fixes it for me.

[coveralls]

Coverage remained the same when pulling 55fb0e0 on romario333:master into f82f43f on chaijs:master.

[coveralls]

Coverage remained the same when pulling e07e57f on romario333:master into f82f43f on chaijs:master.

[romario333]

Sorry, I'm mixing two things in this pull-requests. I'm going to open new pull-request for each.

[logicalparadox]

According to the change made in karma-runner/karma@c7d4627 we can still use a bin. Instead of downgrading lets update the Makefile to point to node_modules/karma/bin/karma instead of the npm installed .bin/karma.

[romario333]

Quick note: this pull request mixes two things together. I have opened new PR for this: #213

Are there any good reasons to depend on the unstable version of karma? Stable (0.10) seems to be working just fine.