Fixed misleading ES6 mentions

[hakkotsu]

Changes are self explanatory. To avoid any further confusion it might be a good idea to rename package to something like Babel React Snippets since Babel is mostly about ES6+ and not React

[jamiebuilds]

Could also add some ES6 snippets

[hakkotsu]

You can always add those lines when you put some ES6 snippets in here. Since in 7 month none were added.
And since all tabTriggers in your snippets are abbreviations I hardly see how ES6 will fit in such convention. cls for class, gen for generator... it's confusing