title: Karma-Coverage is failing to run
body: <p>I am trying to get unit test coverage for an angular.js project. I am using Karm and the Karma-coverage tool via config. I am not seeing any output at all that the coverage reporter is running</p>
  
  <p><code>DEBUG [preprocessor.coverage]: Processing "/home/ &lt;blah&gt;"</code></p>
  
  <p>The Preprocessoror is running, I am seeing it in the console. Likewise, I see the junit reporter create a file after running the tests:</p>
  
  <p><code>DEBUG [reporter.junit]: JUnit results written to...</code> </p>
  
  <p>I see nothing about code coverage and can't find a file anywhere. Here's the config:</p>
  
  <pre><code>module.exports = function(config){
      config.set({
      basePath : '../',
      logLevel: config.LOG_DEBUG,
  
      reporters: ['progress', 'junit', 'coverage'],
  
      preprocessors : {
         'app/js/**/*.js': ['coverage']
      },
  
      files : [
        'app/lib/jquery-1.10.2.min.js',
        'app/lib/angular/angular.js',
        'app/lib/angular/angular-*.js',
        'test/lib/angular/angular-mocks.js',
        'app/js/**/*.js',
        'test/unit/**/*.js'
      ],
  
      autoWatch : true,
  
      frameworks: ['jasmine'],
  
      browsers : ['Chrome'],
  
      plugins : [
              'karma-junit-reporter',
              'karma-chrome-launcher',
              'karma-firefox-launcher',
              'karma-jasmine',
              'karma-coverage'       
          ],
      coverageReporter : {
             type : 'text',
             file : 'coverage.txt'
      },
      junitReporter: {
          outputFile: 'test-results.xml'
      }
  })}
  </code></pre>
  
  <p>Anyone have any ideas?</p>