Add .gitignore
Bootstrapping sequential implementation
[Sequential] Using cabal to build the project

Also renamed tsearch.hs to Main.hs
[Sequential] Splitting the code in modules
[Sequential] Using IntMap instead of Map on the index
[Sequential] Moving output handling to a function
[Sequential] Add Index.find function
[Sequential] Using Array on index
[Sequential] Fix simpleQuery to sum the occurrences
[Sequential] Ordering output
[Sequential] Making the Lexer module pure
[Sequential] Move query processing to its own module
Update .gitignore
[Data] Adding some text files

Making the files on the repo makes the testing easier.
[Sequential] Add support to text passage queries
[Sequential] Lexer: Fix tokenize to accept only ASCII chars
[Sequential] Lexer: Avoiding some compiler warnings
[Data] Add more testing data
Bootstrapping parallel version
Updating .gitignore