* After processing the PlantUML file the generated .png image is opened. The name of the png file is by default the name of the PlantUML source file itself or else it is a name as provided in the source file. After processing the default file is searched for, if it is not found the source file is parsed to figure out the name of the generated image. (More details - http://plantuml.sourceforge.net/sources.html)
    - The 'break' in the file parsing loop can be removed open all generated png files.
NOTE : Can't put comment in the middle of a multi-line statement because Vim will consider it to be another string.
* Converted long commands with ':if', ':else' conditions to multi-line commands with proper indentation.
* Doing silent invocation of plantuml.jar.