Added most basic functionalities.
Several utilities which are ready to use are as follow:
Basic:
1. remove blank lines from the file
2. strip each line, the default is '.\n' which removes the new line and full stop from each line.
3. lowercase whole file
4. remove numbers from the file.
Advanced:
5. remove punctuations and symbols from the file.
6. remove stop words from the file.
7. tokenizer (accepts list of list)
8. convert to stem words and root words (list of list)
9. main_cleaner where you pass the file and will get a list of clean data to write it on file or use as it is.