version bump v0.9.4
bumps commander to v2.0.0
bumps connect to v2.9.0
bumps fs-extra to v0.6.4
bumps jade to v0.35.0
bumps mkdirp to v0.3.5
bumps less to v1.4.2
bumps mime to v1.2.11
removes mkdirp. redundant
removes jade. redundant
removes less. redundant
minor cleanups
uses fse over mdirp
fs uses fs-extra
adds skin fn to assist middleware cascade
refactors fallback 404. Closes#88
rips out old 404 code paths
adds tests for header checking
Thanks @silentrob, closes #99
adds test file for headers