Updated README.md
- Add project discription from original fontforge repository as citation.
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+### What it is ?
+
+Quoting from [TTX/FontTools Sourceforge Project](http://sourceforge.net/projects/fonttools/)
+> a tool to convert OpenType and TrueType fonts to and from XML. FontTools is a library for manipulating fonts, written in Python. It supports TrueType, OpenType, AFM and to an extent Type 1 and some Mac-specific formats.
+
### Quick start
```python setup.py install```