Make "function tool" in ironcli

[treeder]

Say you make a directory for each function, the tool will go through each directory and check for changes, if changed, bump a version number (use the same type of script we use in release.sh? or check for a VERSION file and bump that), then run docker build, tag it with version, then docker push, then update route in IronFunctions.

Should think about some way to help with testing too, like build, then run tests against the container?

See: https://github.com/iron-io/functions/tree/master/tool

and/or build this into serverless framework?

[treeder]

Should essentially do this for each directory: https://github.com/iron-io/functions/tree/master/examples/hello#building-image

And also register the update image with the route.

[seiflotfy]

@Nyarum @treeder is there a branch currently in progress related to this issue?