merge various improvements from https://github.com/Angluca

* recognize NimScript files
* automatically set up tab width in Nim buffers
* remove the NimLog in the python module, which is just a debugging aid

autoload/nim.vim

@@ -1,5 +1,5 @@
 let g:nim_log = []
-let s:plugin_path = escape(expand('<sfile>:p:h'), ' \')
+let s:plugin_path = escape(expand('<sfile>:p:h'), '\')
 
 if !exists("g:nim_caas_enabled")
   let g:nim_caas_enabled = 0
@@ -14,7 +14,7 @@ exe 'pyfile ' . fnameescape(s:plugin_path) . '/nim_vim.py'
 fun! nim#init()
   let cmd = printf("nim --dump.format:json --verbosity:0 dump %s", s:CurrentNimFile())
   let raw_dumpdata = system(cmd)
-  if !v:shell_error
+  if !v:shell_error && expand("%:e") == "nim"
     let dumpdata = eval(substitute(raw_dumpdata, "\n", "", "g"))
     
     let b:nim_project_root = dumpdata['project_path']

autoload/nim_vim.py

@@ -75,13 +75,6 @@ def nimRestartService(project):
   nimTerminateService(project)
   nimStartService(project)
 
-NimLog = None
-if platform.system() == 'Windows':
-  user = getpass.getuser()
-  NimLog = open("C:\\Users\\%s\\AppData\\Local\\Temp\\nim-log.txt" % (user,), "w")
-else:
-  NimLog = open("/tmp/nim-log.txt", "w")
-
 def nimExecCmd(project, cmd, async = True):
   target = None
   if NimProjects.has_key(project):
@@ -90,9 +83,6 @@ def nimExecCmd(project, cmd, async = True):
     target = nimStartService(project)
   
   result = target.postNimCmd(cmd, async)
-  if result != None:
-    NimLog.write(result)
-    NimLog.flush()
   
   if not async:
     vim.command('let l:py_res = "' + nimVimEscape(result) + '"')