chore(project): 添加项目配置文件和忽略规则

- 添加 Babel 配置文件支持 ES6+ 语法转换
- 添加 ESLint 忽略规则和配置文件
- 添加 Git 忽略规则文件
- 添加 Travis CI 配置文件
- 添加 1.4.2 版本变更日志文件
- 添加 Helm 图表辅助模板文件
- 添加 Helm 忽略规则文件

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,17 @@
+<!-- Please make sure you have read and understood the contributing guidelines -->
+
+### Ⅰ. Describe what this PR did
+
+
+### Ⅱ. Does this pull request fix one issue?
+<!-- If that, add "fixes #xxx" below in the next line, for example, fixes #97. -->
+
+
+### Ⅲ. Why don't you add test cases (unit test/integration test)? 
+
+
+### Ⅳ. Describe how to verify it
+
+
+### Ⅴ. Special notes for reviews
+