add start|stop|restart|run to crono executable

this is done using daemonize gem, but it is not breaking the old
interface. But sets a deprected comment to the old one daemonize
process.

Gemfile.lock

@@ -26,6 +26,7 @@ GEM
     byebug (5.0.0)
       columnize (= 0.9.0)
     columnize (0.9.0)
+    daemons (1.2.2)
     diff-lcs (1.2.5)
     haml (4.0.6)
       tilt
@@ -69,6 +70,7 @@ DEPENDENCIES
   bundler (>= 1.0.0)
   byebug
   crono!
+  daemons
   haml
   rack-test
   rake (~> 10.0)
@@ -76,6 +78,3 @@ DEPENDENCIES
   sinatra
   sqlite3
   timecop (~> 0.7)
-
-BUNDLED WITH
-   1.10.6