Fix Bugs/array.prototype.find in v1 master

[hthetiot]

• [x] Deprecate find() in favor of findValue()
• [x] Deprecate findLast() in favor of findLastValue()
• [x] Add console warning
• [x] Detect legacy usage and display warning
• [x] Add ES6 Array.prototype.find shim when missing
• [x] Add ES6 Array.prototype.find basic spec

[hthetiot]

@cesine @yang Can you check that PR

npm i montagejs/collections#bugs/Array.prototype.find

[hthetiot]

Need to add Array.prototype.find when missing also i think.

[hthetiot]

36

[hthetiot]

Thx @kriskowal for wonderful review.