fix #27

Author: yongkangchen

lib/RemoteSync.coffee

@@ -139,7 +139,7 @@ class RemoteSync
     targetPath = path.join(targetPath, path.relative(@projectPath, localPath))
     diffCmd = atom.config.get('remote-sync.difftoolCommand')
     exec ?= require("child_process").exec
-    exec "#{diffCmd} \"#{localPath}\" \"#{targetPath}\"", (err)->
+    exec "\"#{diffCmd}\" \"#{localPath}\" \"#{targetPath}\"", (err)->
       return if not err
       getLogger().error """Check [difftool Command] in your settings (remote-sync).
        Command error: #{err}