updated coding and commit standards page on the wiki

[Justin Obara]

Hello,

I have made a small update to the coding and commit standards page on  
the wiki.
http://wiki.fluidproject.org/display/fluid/Coding+and+Commit+Standards

It now mentions the various levels of commit access to our repository;  
fluid, incubator, and scratchpad.

I have also added some of the references throughout the original text.

Please feel free to comment on the changes and suggest any necessary  
improvements.

Thanks
Justin