Merge pull request #220 from jgordor/master

Lager Logging integration (first step)
New "acceptor_processes" config value.

Also rip out unused code
Make _routes() optional
Fixed websocket handling problem.
Merge branch 'master' of git://github.com/evanmiller/ChicagoBoss into websocket_fix

Conflicts:
	src/boss/boss_mochicow_handler.erl
raw_path -> path - fixes problem with web socket handler.
Merge pull request #223 from davidw/websocket_fix

Websocket fix
Added migrations directory.
Added make_migration and run_migrations functions.
Added redo_migration function that redoes a certain tag by doing down/up.
Migration names must be atoms.
Added some documentation regarding migrations.
Extract migration functions to boss_migrate module.  Export root_priv_dir function in boss_files.
Explain management of schema_migrations table.
Use shorter names.
Merge pull request #224 from davidw/migrations_sans_websockets

Migrations
Update ErlyDTL ({% verbatim %})
New compiler adapter system
Make boss.test.config optional
Fix URL routing