Create a page explaining how to give a talk

[treyhunner]

Page should:

• [ ] Encourage anyone interested in a JS-related talk to give one. Beginners welcome.
• [ ] Link to talk ideas wiki page
• [ ] Explain how to contact the organizers
• [ ] Link to examples of 5 minute lightning talks

[treyhunner]

Here's the wiki page: https://github.com/sandiegojs/sandiegojs.github.com/wiki/Talk-Ideas

I added some more talk ideas. I don't think we can have too many.