extract notifiers into their own file
rename Notifier to Emailer
move constants inline

in this way the constant WAREHOUSES_TO_CONSIDER can be defined on a
per-environment basis and have better spec
add suffix to notifiers

to make more clear which type of object they are
extract environment into its own file
add WAREHOUSES_TO_CONSIDER to spec_helper
group notifications by warehouse
send an email for each warehouse
send each report to selected email addresses
add new warehouses
make Emailer methods class method

to avoid to have default value in initializer
update name of notifier that doesn't do anything

in order to try to make it more meaningful
update spec to reflect Emailer change
update README
add specification for email content
fix typo
add details regarding to email addresses form
fix typos
Merge pull request #1 from acsinfo/new_warehouses

New warehouses - QAS030-14