Step 11 - Add figwheel hooks for HMR

This is not doing much other than to show that we use hooks to provide
us with setup and teardown functions to allow us to write reloadable
code

Author: tmattacchione

src/tallex/time_dive.cljs

@@ -1,3 +1,4 @@
-(ns tallex.time-dive)
+(ns ^:figwheel-hooks tallex.time-dive)
 
-(js/console.log "Hello, Time Dive!")
+(defn ^:after-load re-render []
+  (js/console.log "Hello, Time Dive!"))