1：适配Android Studio 3.0；

guiying712 · web-flow · commit 1f728c5c2957 · 2018-01-04T22:52:51.000+08:00
diff --git a/versions.gradle b/versions.gradle
@@ -108,7 +108,6 @@ build_versions.target_sdk = 27
 build_versions.build_tools = "27.0.2"
 ext.build_versions = build_versions
 
-
 def addRepos(RepositoryHandler handler) {
     handler.google()
     handler.jcenter()
