Some documentation updates

README.md

@@ -4,6 +4,12 @@ Shim for the language server protocol developed by Microsoft. The protocol can b
 
 ## Configuration
 
+First you need to install a language server. An example of installing one might be:
+
+```shell
+$ go get github.com/sourcegraph/go-langserver/langserver/cmd/langserver-go
+```
+
 You will need to put this somewhere that is sourced on startup.
 
 ```vim

autoload/langserver/default.vim

@@ -3,9 +3,19 @@ let s:langserver_executabe = 'langserver-go'
 ""
 " Get the default command for starting the server
 function! langserver#default#cmd() abort
+  let l:bad_cmd = [-1]
+
   if has_key(g:langserver_executables, &filetype)
-    return g:langserver_executables[&filetype]['cmd']
+      let l:tmp_cmd = g:langserver_executables[&filetype]['cmd']
+
+      if type(l:tmp_cmd) != type([])
+        echoerr 'Make sure your dictionary is structued like: {"filetype": {"cmd": [cmd, list, here]}}'
+        return l:bad_cmd
+      endif
+
+      return l:tmp_cmd
+    return 
   else
-    return [-1]
+    return l:bad_cmd
   endif
 endfunction

doc/langserver.txt

@@ -20,7 +20,10 @@ CONFIGURATION						*langserver-configuration*
 Define a dictionary like this in your vimrc. >
 
     let g:langserver_executables = {
-	  \ 'go': ['langserver-go', '-trace', '-logfile', expand('~/Desktop/langserver-go.log')],
+	  \ 'go': {
+	    \ 'name': 'sourcegraph/langserver-go',
+	    \ 'cmd': ['langserver-go', '-trace', '-logfile', expand('~/Desktop/langserver-go.log')],
+	    \ },
 	  \ }
 
 TODO: Mappings
@@ -33,6 +36,11 @@ Begin with calling: >
     call langserver#start({})
 <
 
+or: >
+
+    :LSPStart
+>
+
 TODO: Opening a file
 TODO: Goto definition
 TODO: Hover