Python 3 support and newest version of fontTools

[runarbu]

Support for running on both Python 2 and 3. Tested with Python 2.7 and Python 3.6 and they gives the same output:

env PYTHONPATH=Lib/ python2.7 ./woff-all /tmp/woffTools/py2/f1.woff env PYTHONPATH=Lib/ python3.6 ./woff-all /tmp/woffTools/py3/f1.woff

diff -r /tmp/woffTools/py2/f1_info.html /tmp/woffTools/py3/f1_info.html
300c300
< 					<td>/tmp/woffTools/py2</td>
---
> 					<td>/tmp/woffTools/py3</td>
diff -r /tmp/woffTools/py2/f1_proof.html /tmp/woffTools/py3/f1_proof.html
358c358
< 					<td>/tmp/woffTools/py2</td>
---
> 					<td>/tmp/woffTools/py3</td>
diff -r /tmp/woffTools/py2/f1_validate.html /tmp/woffTools/py3/f1_validate.html
273c273
< 					<td>/tmp/woffTools/py2</td>
---
> 					<td>/tmp/woffTools/py3</td>