make node-cache a peer dependency

[damienleroux]

Hi,

This changes is breaking. People will have to install their own version of node-cache.

Thank you

[damienleroux]

Tests are Ok

nodeCacheModule Tests
    √ Getting absent key should return null
    √ Setting then getting key should return value
    √ Setting then deleting then getting key should return null
    √ Setting several keys then calling .flush() should remove all keys
    √ Setting several keys then calling .mget() should retrieve all keys
    √ Setting several keys via .mset() then calling .mget() should retrieve all keys
    √ Using background refresh should reset a nearly expired key (1517ms)


  7 passing (2s)

[jpodwys]

Thank you for this! I think I was too vague when I suggested the tests run against the latest version of node cache. I meant the dev dep should be to "4.x" rather than "latest" :)

[damienleroux]

updated :)

[jpodwys]

Published to npm as 2.0.0. Thanks again!