Merge pull request #261 from devsonket/release-3.0.0

updated build env

Author: zonayedpca

.travis.yml

@@ -1,9 +1,11 @@
 language: node_js
 node_js:
-  - '10'
+  - "10"
 cache:
   directories:
     - node_modules
+before_script:
+  - sudo apt-get install language-pack-bn
 script:
   - npm test
   - npm run build