hardened cli.js CRLF removal
changed Context to have user's cache dir as default value

Closes https://github.com/DefinitelyTyped/grunt-tsd/issues/5
set update-notifier interval from 1 to 4 days
migrated from optimist to minimist

also fixed bad style default
ditched date-utils

usefull but does ugly Date.prototype modifications
ported own helper to xm.date
removed many require()'s
generate declarations

needs trimming
edited TODO.md
made Q.longStackSupport dependent on a devDependency
HTTPCache.ts eats internal file removal errors

windows' shabby FS race condition

also moved some literals to static members
relaxed CLI input error handling
dropped grunt-concurrent from package.json

it is bundled in gruntfile-gtx