usage example

README.md

@@ -8,7 +8,7 @@
 
 `phd` is an esoteric gopher server for small gopherholes.
 
-point it at a directory and it'll serve up all its text files, sub-directories, and binary files over gopher. `any .gph` files will be served up as [gopermaps](https://en.wikipedia.org/wiki/Gopher_(protocol)#Source_code_of_a_menu), and executable `.gph` files will be run as a script with their output served to the client, like cgi! 
+point it at a directory and it'll serve up all its text files, sub-directories, and binary files over gopher. any `.gph` files will be served up as [gopermaps](https://en.wikipedia.org/wiki/Gopher_(protocol)#Source_code_of_a_menu), and executable `.gph` files will be run as a script with their output served to the client, like cgi! 
 
 special files:
 
@@ -55,11 +55,26 @@ then:
 
 ## usage
 
-    phd [options] <directory>
 
-    phd ./path/to/gopher/root    # Serve directory over port 70.
-    phd -p 7070 docs             # Serve 'docs' directory on port 7070
-    phd -h localhost             # Serve current dir using hostname "localhost".
+    Usage:
+
+        phd [options] <root directory>
+
+    Options:
+
+        -p, --port      Port to bind to.
+        -h, --host      Hostname to use when generating links.
+
+    Other flags:
+
+        -h, --help      Print this screen.
+        -v, --version   Print phd version.
+
+    Examples:
+
+        phd ./path/to/gopher/root    # Serve directory over port 70.
+        phd -p 7070 docs             # Serve 'docs' directory on port 7070
+        phd -h localhost             # Serve current dir using hostname "localhost".
 
 ## installation