Merge pull request #1 from kevilu9116/master

Added Proper Directory Structure
Added annotation.py and tissueSourceSite and CommonTumors
added proper annotation.py with fixes to take cmd line input
Updated README to show usages
Update and rename README to README.md
Update README.md
removed provided CommonTumors file
Merge branch 'master' of https://github.com/RitwikGupta/Lu
Update README.md
Fixed error in reducer.py where it outputted a header by mistake
Merge branch 'master' of https://github.com/RitwikGupta/Lu
added error message for annotation.py in case of improper command line inputs
added error messages to reducer and transpose in case of wrong command line inputs
added normalFinder.py
tried to fix last two digit read issue in normalFinder
fixed error in annotation.py where it could not find providedFiles
removed a debug print from annotation.py
added normalExpressionExtractor.py