README should have 1 or 2 line description of edalize

[mithro]

I suggest;

Python Library for interacting with EDA tools.

Currently you take like 5 paragraphs to describe EDAlize and I get bored before actually knowing what it does....

[eine]

Did you try 'How to use it?' instead of 'What's this?'?

[olofk]

@mithro This any better?