fixed assemblies json_create problem. It prints a collection now.

@morpheyesh @rajthilakmca  @thomasalrin  
### Let us use `Eclipse Luna` for all our project.  `gedit`, `atom` for light editing only. 
The reason being "source beautifier doesn't work reliably in other editors`. This bug could have been detected if we used a different editor.

- This fixes the problem which says "json_create" method not found in `Megam::Assemblies.Class`.
It turns out the code missed couple of `end` for the `def`` method.

- We need to use the eclipse tool with "Ruby on Rails plugin". This helps to do `Source - Format` (CTRL + ALT + F) and detect these problems