change Utils functions to use lowercase and hyphen

Beginning move away from titlecased CamelCase names
lowercaseify CLI
kill server if already running when starting tests

this prevents weird errors caused by multiple servers conflicting
check that the path exists before killing server

doh
lowercaseify Daemon
lowercaseify Key
more lowercasing of Daemon
lowercaseify and unredundantify Stomp::Data
lowercaseify Data
lowercaseify Daemon::Client
lowercaseify Daemon::Dispatch
fix method name
lowercaseify Crypt
Setup -> setup
consistent naming in test helper