Get detailed formats from engines (#38)

* Add get_detected_gpus() and supported_render_engines() to Blender class

* Parse help args for Blender

* Return dict instead of list

* Parse args for FFMPEG

* Add API to get renderer args

* Only return available renderers

* Parse help args for Blender

* Return dict instead of list

* Parse args for FFMPEG

* Rebase off master

* Rebase

* Change methods from class methods to instance methods

* FFMPEG format fetching

lib/engines/ffmpeg_engine.py

@@ -0,0 +1,4 @@
+
+
+if __name__ == "__main__":
+    print(FFMPEG.get_frame_count('/Users/brett/Desktop/Big_Fire_02.mov'))