Minigrid Versions Save

• Changed CSS translate to translate3D #18

• Update to allow first argument to be a string OR an existing DOM node #14
• Update README to reflect new first argument #14
• Amend tests

Thanks @jodyheavener!

• Added initial tests
• The done callback now returns a nodeList
• Added CONTRIBUTING

• Fixed crash when node list is empty #12

• Added minified version and uglifyjs via npm run build task #6

• Fixed create multiple instances of mini grid #9
• Updated README

• Fixed and improved check for gutter equals zero #5

• Added position:absolute to grid elements #3
• Added position:relative to main grid container #3
• Updated README to reflect API changes

• Added feature for control animation for each grid item

• Added callback optional parameter