Performance Tools & Docs

[ericduran]

• [ ] Document xhprof availability
• [ ] Document siege availability
• [ ] Document profiling with xhprof
• [ ] Document profiling with xdebug
• [ ] Document tracing with xdebug
• [ ] Document how to see mysql slow query logs
• [ ] Add webgrind
• [ ] Add XHGui
• [x] Add local splunk for logs gathering

[ericduran]

I'm pretty sure I'm missing other stuff but this is a good list to start with.

[rabellamy]

See #194