bump cassandra to latest 1.1.* stable
bump version in installation instructions
inc sleep time, server isn't available otherwise
fix travis badge display
use services for cassandra
comment the travis badge until they fix their vm issues
add cluster/shutdown
restore travis badge
update readme and bump lamina
Merge branch 'dev'

Conflicts:
	project.clj
prepare ground for rc5 (c* 1.2 support)
properly close underlying TNonblockingSocket when killing clients
use cassandra own code for serialization (as discussed on twitter with @ifesdjeen)