compatible version for 0.11.x without breaking current version.
Merge pull request #37 from yorkie/master

compatible version for 0.11.x without breaking current version.
Natives moved to src
Prepare to v5.0.0

Now compatible with NodeJS v0.11.13
Added prefixes for cpu and heap files
  (profile.cc -> cpu_profile.cc)
Added Heap_Graph API
Updated Nan dependence to 1.2.0
Rewrited HEAP getHeapStats
  (now receives iterator and callback functions)
Cleared JS API
Removed postinstall linking script
Changed homepage link
Added tests for binging
Merge pull request #39 from 3y3/prerelease

Prerelease
Release 5.0.0