update readme

add one more wiki link to "how to help atraci"
Fixed Issue 32. Check network connectivity before search operation
Merge pull request #40 from 5punk/master

Fixed Issue 32. Check network connectivity before querying.
If busy buffering, disable play button
Linux 32/64 support for nodewebkit0.10.1. Fixed #35, added ffmpegsummo.so for linux32
Merge pull request #45 from 5punk/bug/addLinuxSupportNodewebkit0.10.1

Linux 32/64 support for nodewebkit0.10.1. Fixed #35, added ffmpegsummo.s...
Add special media key to fix #21

1. update node-webkit builder
2. add media key support
Merge pull request #25 from EragonJ/feature/add-speical-media-key

Add special media key to fix #21
bump version to 0.6.0