* ✨ add dev server closes ApoorvSaxena#33

* ✨ add watch mode

* ✨ updated package version

* 🐛 fixed data-background-image attr

* ✨ updated package version in dist files

* ✨ added test cases for other attributes usage

✨ added triggerLoad support

* lint test files

* ✨ add trigger load function closes ApoorvSaxena#42

* remove console.log

* add build script to precommit hook

* ✨ use matches method

* 📝 add documentation of triggerLoad

* ✨ add small polyfill for matches

* 💚 fix tests

* ✨ make requested changes

* ✨ 📝 update the docs

* 📝 update the docs

* add build files

✨ Fixed IE 9 dataset issue

* Removed package-lock

* Removed timeout intended for testing

* ✨ added support for background images

* added support for responsive images

* replaced images with progressive JPEGs

* fixed lint issues

* 🎉 setup test case infra with basic test cases

* ✨ added test cases when image shouldn't load

* ✨ added test cases when different selector is used

* 💚 fixed CI build

* 💚 fixed test cases and CI build

* Use regular for loops for speed and size

* Code correction

* Use continue instead of nested if + else

add git hooks

2. add git hooks

Remove dist

Travis integration