Merge branch 'headless' of https://github.com/sjanuary/appmetrics into headless

Author: sjanuary

README.md

@@ -468,7 +468,7 @@ The npm package for this project uses a semver-parsable X.0.Z version number for
 Non-release versions of this project (for example on github.com/RuntimeTools/appmetrics) will use semver-parsable X.0.Z-dev.B version numbers, where X.0.Z is the last release with Z incremented and B is an integer. For further information on the development process go to the  [appmetrics wiki][3]: [Developing](https://github.com/RuntimeTools/appmetrics/wiki/Developing).
 
 ## Version
-1.1.3 development
+2.0 development
 
 ## Release History
 `1.1.2` - Update agent core to 3.0.10, support Node.js v7.  

index.js

@@ -14,7 +14,11 @@
  * limitations under the License.
  *******************************************************************************/
 var path = require("path")
-var main_filename = require.main.filename;
+if(require.main != null){
+  var main_filename = require.main.filename;
+} else  {
+  var main_filename = "";
+}
 var module_dir = path.dirname(module.filename)
 var os = require("os")
 var aspect = require('./lib/aspect.js');