Updated index.d.ts with the last version
Updated index.d.ts with the last version

Replaced the contents with the new version:
https://github.com/mpneuried/nodecache/blob/master/index.d.ts

Has new methods.
chrootsu/DefinitelyTyped,AgentME/DefinitelyTyped,AgentME/DefinitelyTyped,dsebastien/DefinitelyTyped,borisyankov/DefinitelyTyped,benliddicott/DefinitelyTyped,aciccarello/DefinitelyTyped,zuzusik/DefinitelyTyped,rolandzwaga/DefinitelyTyped,zuzusik/DefinitelyTyped,alexdresko/DefinitelyTyped,dsebastien/DefinitelyTyped,georgemarshall/DefinitelyTyped,one-pieces/DefinitelyTyped,rolandzwaga/DefinitelyTyped,arusakov/DefinitelyTyped,alexdresko/DefinitelyTyped,georgemarshall/DefinitelyTyped,arusakov/DefinitelyTyped,AgentME/DefinitelyTyped,chrootsu/DefinitelyTyped,arusakov/DefinitelyTyped,laurentiustamate94/DefinitelyTyped,aciccarello/DefinitelyTyped,aciccarello/DefinitelyTyped,borisyankov/DefinitelyTyped,markogresak/DefinitelyTyped,magny/DefinitelyTyped,magny/DefinitelyTyped,mcliment/DefinitelyTyped,georgemarshall/DefinitelyTyped,zuzusik/DefinitelyTyped,georgemarshall/DefinitelyTyped,AgentME/DefinitelyTyped