Remove explicit Dispatch support

Test runners and pre-loaders that require a different command to be run
should be enabled by setting `g:rspec_command` in your .vimrc. The
pre-existing support for Dispatch didn't work if you loaded vim-rspec
before Dispatch. Rather than work around this or any other
runner/pre-loader issues, we should leave it up to the user to set the
command.

CHANGELOG.md

@@ -1,2 +1,5 @@
+* 2013-05-03 - Removed explicit support for Dispatch because it introduces  a
+  load order dependency. Set `g:rspec_command` in your .vimrc if you want to
+  use Dispatch or any other test runner.
 * 2013-04-11 - `RunCurrentSpecFile` and `RunNearestSpec` will fall back to
   `RunLastSpec` if not in spec file.

README.md

@@ -30,6 +30,15 @@ Example:
 let g:rspec_command = "!rspec --drb {spec}"
 ```
 
+This `g:rspec_command` variable can be used to support any number of test
+runners or pre-loaders. For example, you can use
+[Dispatch](https://github.com/tpope/dispatch) and
+[Zeus](https://github.com/burke/zeus) together with the following:
+
+```vim
+let g:rspec_command = "Dispatch zeus rspec {spec}"
+```
+
 ## License
 
 rspec.vim is copyright © 2013 thoughtbot. It is free software, and may be

plugin/rspec.vim

@@ -1,15 +1,12 @@
 let s:plugin_path = expand("<sfile>:p:h:h")
 
 if !exists("g:rspec_command")
+  let s:cmd = "rspec {spec}"
+
   if has("gui_running") && has("gui_macvim")
-    let g:rspec_command = "silent !" . s:plugin_path . "/bin/run_in_os_x_terminal 'rspec {spec}'"
+    let g:rspec_command = "silent !" . s:plugin_path . "/bin/run_in_os_x_terminal '" . s:cmd . "'"
   else
-    let s:cmd = "rspec {spec}"
-    if exists(":Dispatch")
-      let g:rspec_command = "Dispatch " . s:cmd
-    else
-      let g:rspec_command = "!echo " . s:cmd . " && " . s:cmd
-    endif
+    let g:rspec_command = "!echo " . s:cmd . " && " . s:cmd
   endif
 endif