Add the bintray tasks for publishing artifacts to bintray

Let's pretend we're not a million miles away from publishing artifacts for
deploydb itself right now <_<
Add gitter hooks to travis
Add pry for local tinkering/debugging
More bullet fixes in the documentation

I swear I used to know how to use asciidoc properly
Restructuring the cukes to use cucumber-jvm since I'm moving this away from Ruby

Unfortunately most of the tools I want to use are more Java-oriented so I might
as well just go whole-hog into the land of the JVM