Added more documenation on depencies and usage to README.

README

@@ -1,8 +1,12 @@
 localtunnel -- instant public tunnel for local web servers
 
-Dependencies: Ruby (with libopenssl) and Rubygems
+Dependencies: Ruby (with libopenssl) and Rubygems.  A public key.
+   Type "sudo apt-get install ruby ruby1.8-dev rubygems1.8 libopenssl-ruby"
+   to satisfy dependencies.
+   Run "ssh-keygen" if you have never made a public key.
 
-Install: sudo gem install localtunnel
+Install: sudo gem install localtunnel 
+    or "git clone http://github.com/progrium/localtunnel.git" for source.
 
 Usage: localtunnel [options] <localport>
   -k, --key FILE    upload a public key for authentication
@@ -10,7 +14,8 @@ Usage: localtunnel [options] <localport>
 localtunnel is a client to a free and open source reverse tunneling service 
 made specifically for web traffic. It's intended to be used to temporarily 
 expose local web servers to the greater Internet for debugging, unit tests, 
-demos, etc. 
+demos, etc.   
+
 
 This is how you make your local port 8080 public:
 
@@ -22,12 +27,15 @@ a remote host that has GatewayPorts enabled, but without all the configuration
 or the need of a host. The localtunnel command works with a server component
 that is running on localtunnel.com, which is provided as a free service.
 
-If you haven't run the command before, you'll need to upload a public key to
-authenticate. You do this like so:
+If have never run localtunnel before, you'll need to upload a public key to
+authenticate. You do this once:
 
   $ localtunnel -k ~/.ssh/id_rsa.pub 8080
 
 After that, you shouldn't have to use -k again.
 
-The tunnel remains open for as long as the command is running. The tunnel is 
-closed if the command exits.
+localtunnel can be started before or after the local web server.   It tunnels
+through to the url given in that status message "publicly accessible from..." 
+for as long as the command is running.  The tunnel is 
+closed if the command exits.
+