update istanbul to 0.4.5

use src pattern instead of the task's resolved files (this.fileSrc) that doesn't work with istanbul 0.4.5

Author: nirnatan

package.json

@@ -38,7 +38,7 @@
   ],
   "dependencies": {
     "deepmerge": "^0.2.10",
-    "istanbul": "^0.4.4",
+    "istanbul": "^0.4.5",
     "jasmine": "^2.4.1",
     "jasmine-reporters": "^2.2.0",
     "jasmine-spec-reporter": "^2.5.0"

tasks/jasmine-node-task.js

@@ -312,7 +312,7 @@ module.exports = function jasmineNodeTask(grunt) {
       options.coverage.report = options.coverage.report || ['lcov', 'text-summary'];
     }
 
-    fileSrc = this.filesSrc || fileSrc;
+    fileSrc = this.data.src || fileSrc;
 
     // Tell grunt this task is asynchronous.
     done = this.async();