Allow replace with views

[hcarver]

Refactored as you suggested, added some documentation and tests. The instructions for setting up a dev environment didn't work for me, so I'm just crossing my fingers that the test passes!

[coveralls]

Coverage remained the same at 100.0% when pulling fd02c22 on hcarver:allow_replace_with_views into 5be4f13 on SchemaPlus:master.

[ronen]

@hcarver cool looks good. Only one thing i might add to the doc is something along the lines of "subject to the some limitations; see the MySQL and PostgreSQL docs for details". But no need to make you go back again, i'll just merge and then edit it myself.

The instructions for setting up a dev environment didn't work for me

Bummer. What didn't work?

so I'm just crossing my fingers that the test passes!

It does!

[ronen]

Actually I noticed that :force wasn't documented at all! So I added documentation for both it and :allow_replace in the "Creating Views" section (moved your doc over).

I've release version 0.2.0 with this in it. Thanks for your contribution!

[hcarver]

No problem!

I couldn't find a single set of instructions to follow, but I eventually realised I needed ruby 2.1.5, and to install the schema_dev gem (it wasn't installing under ruby 2.0.0, which is probably not a problem if development is intended to only be done on 2.1.5).

I can't remember exactly what the next error I had was, but I think it was around creating the databases needed.

[ronen]

I eventually realized I needed... to install the schema_dev gem.

OK, yeah, that should be clearer. And the README over there should give better setup instructions. I've added an issue SchemaPlus/schema_dev#9