Issue71 readme tidy

[tartley]

A start towards addressing #71

Most of the diffs are contentless whitespace faffing - I like to view things in an 80 char terminal. My apologies.

The only substantive changes are:

• I removed my own email address as a suggested project 'contact' (because I no longer actively contribute these days)
• I removed contributor Jesse's email address from this public README. (Sorry Jesse!)
• I added the word 'contact' to the link to the colorama discussion group, so that people doing 'find in page' for 'contact' will find it.

[wiggin15]

Thanks! More things to consider:

• Remove this line: "Ask Jonathan for commit rights, you'll get them."
• Remove the Thanks section? Of course I don't want to remove any ACK to contributors, but most of this list duplicates entries in the changelog, and I'm not sure the README is the place for this. Maybe we need to find the names not mentioned in the changelog, find how they contributed, and move them to the changelog. Alternatively, create a separate file for ACKs (I saw other projects using it, e.g. psutil and Python itself). This is just a suggestion - what do you think?
• Your name should be more prominent than a single line at the bottom :)