Add some documentation
Add check for sequence length equality
Raise error if no matches found for regex in column
Remove unnecessary import of sys module in tab2phy
Add argparse block to run_phylip

Now it can process multiple files supplied on CL.
Move executable scripts to 'bin'
Add files to polish up the distribution

Including:
CHANGES.txt
LICENSE.txt
MANIFEST.in
README.txt
setup.py
Modify .gitignore to ignore build directory
Fix reference to LICENSE.txt file