Added a branch for developing the python vlsv writer
Added a new file for vlsv writer
Changed the documentation
Added an error message
Fixed operator bug in the mayavi grid
Added write function to vlsvwriter
Added comments
Vlsv writer should be somewhat finished now
Changed name of the vlsvfile to vlsvreader and VlsvFile to VlsvReader
Fixed initialization
Changed the file name of the file name to full path instead of local path
The vlsv writer is now working
Merge branch 'vlsv-writer-QUESPACE-395'