Allow connecting to a custom browser via cljs-repl

First argument to `script/cljs-repl` is treated as a browser's
executable. No arguments triggers default browser (as before).

script/cljs-repl

@@ -4,10 +4,15 @@ cd `dirname $0`/..
 
 source script/setup_classpath.sh
 
+BROWSE_URL="(browse-url \"http://localhost:8080/development\")"
+if [[ -n "$1" ]]; then
+    BROWSE_URL="(binding [*open-url-script* \"$1\"] $BROWSE_URL)"
+fi
+
 java -server -cp $CLJSC_CP jline.ConsoleRunner clojure.main -e \
 "(use '[one.sample.dev-server :only (run-server cljs-repl)])
- (use '[clojure.java.browse :only (browse-url)])
+ (use '[clojure.java.browse :only (browse-url *open-url-script*)])
  (run-server)
- (future (Thread/sleep 3000) (browse-url \"http://localhost:8080/development\"))
+ (future (Thread/sleep 3000) $BROWSE_URL)
  (cljs-repl)" --repl