fix the vue init error from private repository in window OS (#565)

Author: kospot

bin/vue-init

@@ -65,7 +65,7 @@ const name = inPlace ? path.relative('../', process.cwd()) : rawName
 const to = path.resolve(rawName || '.')
 const clone = program.clone || false
 
-const tmp = path.join(home, '.vue-templates', template.replace(/\//g, '-'))
+const tmp = path.join(home, '.vue-templates', template.replace(/[\/:]/g, '-'))
 if (program.offline) {
   console.log(`> Use cached template at ${chalk.yellow(tildify(tmp))}`)
   template = tmp