add more options to the start docs

man/foreman.1.ronn

@@ -30,6 +30,12 @@ The following options control how the application is run:
     Specify the number of each process type to run. The value passed in
     should be in the format `process=num,process=num`
 
+  * `-e`, `--env`:
+    Specify one or more .env files to load
+
+  * `-f`, `--procfile`:
+    Specify an alternate Procfile to load, implies `-d` at the Procfile root.
+
   * `-p`, `--port`:
     Specify which port to use as the base for this application. Should be
     a multiple of 1000.