script: Add development-aliases

Signed-off-by: Lewis Marshall <lewis@lmars.net>
Merge pull request #291 from flynn/development-aliases

script: Add development-aliases
host: Fix "flynn-host ps -q"

Signed-off-by: Lewis Marshall <lewis@lmars.net>
host: Add "flynn-host help"

Closes #292

Signed-off-by: Lewis Marshall <lewis@lmars.net>
Merge pull request #293 from flynn/fix-flynn-host-ps

host: Fix "flynn-host ps -q"
Merge pull request #294 from flynn/flynn-host-help

host: Add "flynn-host help"
README: Clarify booting layer 0

Signed-off-by: Jonathan Rudenberg <jonathan@titanous.com>