Use makeTreeSync

spec/config-spec.coffee

@@ -227,7 +227,7 @@ describe "Config", ->
 
     describe "when the config file does not exist", ->
       it "creates it with an empty object", ->
-        fs.makeTree(config.configDirPath)
+        fs.makeTreeSync(config.configDirPath)
         config.loadUserConfig()
         expect(fs.existsSync(config.configFilePath)).toBe true
         expect(CSON.readFileSync(config.configFilePath)).toEqual {}

src/config.coffee

@@ -58,7 +58,7 @@ class Config
   initializeConfigDirectory: (done) ->
     return if fs.existsSync(@configDirPath)
 
-    fs.makeTree(@configDirPath)
+    fs.makeTreeSync(@configDirPath)
 
     queue = async.queue ({sourcePath, destinationPath}, callback) =>
       fs.copy(sourcePath, destinationPath, callback)
@@ -80,7 +80,7 @@ class Config
   # Private:
   loadUserConfig: ->
     unless fs.existsSync(@configFilePath)
-      fs.makeTree(path.dirname(@configFilePath))
+      fs.makeTreeSync(path.dirname(@configFilePath))
       CSON.writeFileSync(@configFilePath, {})
 
     try