fix GH-207
undo removal of onclose for websocket api compattibility
update close event in README
Use !this.xhr for testing in cleanup method
Merge pull request #248 from poohlty/cleanup-test

Use !this.xhr for testing in cleanup method
fix parseUri('localhost:80'), add ipv6 addresses
Merge pull request #247 from bmalehorn/parseUri

fix util.parseUri('localhost:3000') bug
Merge pull request #239 from mokesmokes/closefix

fix GH-207
test: fixed close flag
added `npm-debug.log` to gitignore
Release 0.9.0
package: bump `engine.io` server
README: bump copyright