Allow search.json generation separate from Swiftype upload

[Jberlinsky]

Inspired by emberjs/guides#2. Adds a command-line flag --only-generate to middleman swiftype that will place search.json in the source/ directory.

Also starts to add testing around Swiftype upload functionality. These are tagged with @wip because I couldn't seem to stub out Swiftype::Client while executing it via the Cucumber steps.

[trek]

Also starts to add testing around Swiftype upload functionality.

That is probably its own PR, yeah?

[bsclifton]

@Jberlinsky can you break out the testing (around Swiftype upload) into a separate PR (and remove from this)? Should help speed up acceptance of this :)

[bsclifton]

@Jberlinsky I broke the first bit of your PR into #4

I did some testing and incorporated feedback from @trek; looking great :) Didn't mean to step on your toes, just trying to keep it simple. Awesome job BTW 👍

[Jberlinsky]

@bsclifton Thanks for the assist :)

[LeonB]

Hi guys. Looks great! Should I accept #3 or #4?

[bsclifton]

#4 would be ideal :) Then @Jberlinsky could merge (if you don't mind) and his PR #3 adds more testing :)

[LeonB]

Done. Don't mind at all. My repo is you repo :)

[bsclifton]

Awesome; @Jberlinsky, if you were able to merge (I only had to make a few changes; for example, changing the source directory to the build directory), your PR is ready to go :)

[Jberlinsky]

@bsclifton All set! cc @LeonB @trek

[bsclifton]

👍

[LeonB]

Done! Thanks for the contribution. Really appreciate it.