Automatic Travis tests & consistency

* Added `test:types` to travis run script.
* Changed `main` value in package.json to match `types` value style.

.travis.yml

@@ -6,7 +6,9 @@ node_js:
 - '6' # EOL: April 2019
 before_script:
 - npm install -g gulp
-script: gulp
+script:
+- gulp
+- test:types
 deploy:
 - provider: npm
   email: info@saturnserver.org

package.json

@@ -9,7 +9,7 @@
         "javascript",
         "fontawesome"
     ],
-    "main": "./src/js/easymde.js",
+    "main": "src/js/easymde.js",
     "types": "types/easymde.d.ts",
     "license": "MIT",
     "author": "Jeroen Akkerman",