Made basic structure of the source directory
Added renameFiles.py to rename all the files in the corpus according
to some pattern.

Ocred and Original files have different prefix. So ran this file on
original-text files so that Ocred and Original files have the same
name.
Added deleteCorpusFiles.py to delete all the files which are not common between
Ocred and Original data.

There are some extra files present in Original data. This script will find and
delete all the extra files.
Caution: Have some magic numbers and strings, so modifiy before use.

After using this still there is some error in 2004...->mukhomukhi folder, so
check it manually.
Added corpusStats, it will contain different stats regarding corpus for different times.