0.11 compat using nan

[pierreinglebert]

For #1

I changed some calls and I used NanAsyncWorker instead of playing with uv_work and persistent, it says there are 250 changes (due to code move) but I think it's more 30-50.

Works well for me on 0.11.10 (newer release are still buggy with native mods).

[lovell]

Thank you for working on this @pierreinglebert, much appreciated.

Does the epeg module fail to compile on Node.js 0.11? If so, this should probably be removed in its entirety rather than be commented out.

I'll take a closer look at the other changes with a different diff and report back here.

[pierreinglebert]

Yes i forgot to mention that epeg doesn't work on 0.11

[lovell]

Looks good to me, thank you again for doing this @pierreinglebert, especially as v0.12 will be arriving “as soon as humanly possible”.