fix methods accessors
added invertExtent to d3.d.ts
moved invertExtent(y: any): any[]; to Scale interface from QuantizeScale interface
Merge pull request #1523 from bolhovsky/ol-accessors

fix methods accessors
Merge pull request #1524 from anwalkers/master

Add invertExtent to d3 Scale Interface
Merge branch 'master' of https://github.com/borisyankov/DefinitelyTyped
Merge branch 'master' of github.com:gerich-home/DefinitelyTyped