JSAPI 3.15

[jwasilgeo]

@tomwayson please review. Resolves #156. A couple of notes:

• Seem to be some timing differences between 3.15amd and 3.15compact. I'd recommend trying out both on the docs site and refreshing pages to see what you think. How should we proceed with what esriLoader defaults to?
• My gulp test is hosed with running protractor tests. My protractor, webdriver-manager, node, java, etc. deps seem to be fine and on my win PATH. Have you seen this occurring on your end? Right when gulp-angular-protractor is starting up. So, I'm submitting this PR but I'd have felt more comfortable with my changes if I could have run this first.

[tomwayson]

Definitely want to use the compact build. The amd buiild is not suitable for use on it's own. It should be paired w/ a loader (dojo, require.js, etc) and ideally brought down locally for a custom build.

gulp test runs fine for me. I did have a couple failures due to timeouts while using the amd build (as to be expected, it is much slower), but after switching to compact, all tests pass. Try pulling the latest and running the tests.

[jwasilgeo]

@tomwayson thanks for feedback and latest commit with 3.15compact. As you suggested, my node version was possibly too new. Rolling back to 0.x helped me run gulp test.