Add travis config and prepare package to be published on npm

.npmignore

@@ -0,0 +1,9 @@
+src
+tests
+.eslintrc.js
+.gitignore
+.travis.yml
+babel.config.js
+jest.config.js
+tsconfig.json
+yarn.lock

.travis.yml

@@ -0,0 +1,21 @@
+language: node_js
+node_js:
+  - "11"
+
+cache:
+  yarn: true
+  directories:
+    - node_modules
+
+script:
+  - yarn tsc
+  - yarn test
+  - yarn build
+
+deploy:
+  - provider: npm
+    skip_cleanup: true
+    email: $NPM_USER_EMAIL
+    api_key: $NPM_API_KEY
+    on:
+      tags: true

package.json

@@ -17,6 +17,9 @@
         "elyby"
     ],
     "license": "MIT",
+    "publishConfig": {
+        "access": "public"
+    },
     "scripts": {
         "build": "babel src -d lib --extensions .ts,.js",
         "test": "jest"