Remove empty node namespace
Stop lein pedantic from complaining
Fix dev logging config
Improve exception handlin in api processor
Add keypair and security-group functions

Adds async functions to ensure a keypair and a security-group exists,
and to open a port on a security-group.
Use RELEASE for the release plugin version
Updated project.clj, release notes and readme for 0.2.0
Updated version for next release cycle