Removed hardcoded path from 'noTaskNames' test expectation so it pass…

…es properly on Travis CI

test/expected/pre-commit.noTaskNames

@@ -4,7 +4,7 @@
 var exec = require('child_process').exec;
 
 exec('grunt', {
-       cwd: '/home/rhumaric/Dropbox/projects/grunt-githooks'
+       cwd: '{{expectedWorkingDir}}'
      }, function (err, stdout, stderr) {
 
   console.log(stdout);