Editing Getting start page

[Brenda Wang]

Dear community and documentation list:
Due to the updated of software images, some information on getting start
page became outdated , so I started working on updated this page:
http://wiki.openmoko.org/wiki/Getting_Started_with_your_Neo_FreeRunner

I had removed some outdated content, and updated new distributions
information on it.
Feel free to let me know if I missed anything?

Regards
Brenda