Added Icon to Run button

package.json

@@ -108,7 +108,7 @@
         "c9.ide.save": "#e00549cb0f",
         "c9.ide.scm": "#0bccfb982b",
         "c9.ide.terminal.monitor": "#b76f1c9f24",
-        "c9.ide.test": "#cf0766483f",
+        "c9.ide.test": "#78485eca4b",
         "c9.ide.test.mocha": "#4d3ad597be",
         "c9.ide.theme.flat": "#2de8414db7",
         "c9.ide.threewaymerge": "#229382aa0b",