Add pause/resume methods for controlling reloads

With regards to https://github.com/shakyShane/browser-sync/issues/353#issuecomment-65300931

Still need to add tests
@shakyShane

Yes, you're right.
I found jscs's [requireBlocksOnNewline](https://github.com/jscs-dev/node-jscs#requireblocksonnewline) rule. Probably it helps us.