Merge pull request #73 from rkent/allow-running-as-module

Allow running as module

README.md

@@ -30,6 +30,12 @@ rosdoc2 open ./doc_output/index.html
 
 For more advanced usage see the documentation.
 
+It may be helpful during rosdoc2 development to run a version of rosdoc2 without installing it. This can be done
+(after doing an initial normal install to make sure prerequisites are available) by running, from the rosdoc2 main directory:
+```bash
+python3 -m rosdoc2.main <options>
+```
+
 ### Set up a ROS 2 package to be used with this tool
 
 In many cases, C/C++ packages require no configuration, and will work if you simply layout your package in a standard configuration and the tool will do the rest.

rosdoc2/main.py

@@ -86,3 +86,7 @@ def main(sysargs=None):
     # Finally call the subparser's main function with the processed args
     # and the extras which the preprocessor may have returned
     sys.exit(args.main(args) or 0)
+
+
+if __name__ == '__main__':
+    main()