add signin action into explorer title (LeetCode-OpenSource#42)

Author: jdneo

.gitignore

@@ -57,13 +57,10 @@ typings/
 # dotenv environment variables file
 .env
 
-# package-lock file since it just causes merge conflicts
-package-lock.json
-
 # Output
 out
 *.vsix
 .vscode-test
 
 # Mac
-.DS_Store
+.DS_Store

.travis.yml

@@ -1,7 +1,7 @@
 language: node_js
 
 node_js:
-  - 'stable'
+  - 'lts/*'
 
 before_install:
   - if [ $TRAVIS_OS_NAME == "linux" ]; then

CHANGELOG.md

@@ -3,6 +3,10 @@ All notable changes to the "leetcode" extension will be documented in this file.
 
 Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
 
+## [0.6.1]
+### Added
+- Add Sign in action into LeetCode Explorer title area ([#25](https://github.com/jdneo/vscode-leetcode/issues/25))
+
 ## [0.6.0]
 ### Changed
 - Move LeetCode explorer into activity bar ([#39](https://github.com/jdneo/vscode-leetcode/issues/39))