Fleshed out info on usage, contributing
Setting up for different environments

- Begins work on #4
Config object setting @environment from ENV['POMODORI_ENV']

- In support of #4
- Accepts 'development', 'test', 'production' or nil
- Exception raised otherwise
Specifying env. specific databases

- Issue #4
Bringing spec's config file up to current format

- Issue #4
Setting environments when no setup has taken place yet

- Issue #4
- Helps Sequel::Model
Setting POMODORI_ENV to 'test'

- Issue #4
Existing tests and models adjusted in progress to expect env-specific DBs

- Issue #4
Pomodori::Database knows about environments

- Issue #4
- Issue #4
- Possibly overkill, since anything that mixes-in Pomodori::Config will
  blow-up
- Refactored known_environments to a method in Pomodori::Config
Fixed issue where tests ran multiple times
Reworking setting of environment to facilitate testing

- Issue #4
Small refactoring for readability

- Issue #4
Alright, I seem to be able to distinguish environments now

- Issue #4
- Updated config file values for prod data store
- Updated Setup#initialize to set environment
- Updated tests to check for environment being set and matching by file name
Updated docs to match new config file value for prod data store

- Issue #4
Updated my notes for the work debugging and fixing

- Resolves Issue #4