Merge pull request #1 from crook/master

Add message app to Luoyun Web
include json-parser lib from https://github.com/udp/json-parser.git
For LuoYun Cloud 0.4 release,
- instance network is configurable
- instance disk is configurable
- complete instance delete
- check node storage before running instance
- do not put job in pending mode, return failure instead
- more error checking
Merge branch 'master' of github.com:luoyun/LuoYunCloud
use floppy to pass configuration info to instance
create pyosc for instance configuration
create pyweb for instance web
create webssh for instance web ssh
add favicon.ico file and webssh.py
change log scheme, log stdout and stderr output as well
update node status
automatically enable node if same as clc
use 'enable' instance webssh option
proper error handling for pyosm
add logging to lyweb
make sure osmanager status notification is sent out
add lyweb log support
add README for os manager 0.4.0
add generic appliance status script
Use /bin/bash as shell interpreter
reduce job dispatch time to 2s
improve osm report debug message
release entity while a job is timed out
use second disk as extra storage
make lyosm.py executable
fix bug in entity release routine
fix bug of releasing entity right after instance is stopped
Redesign directory structure for OS manager.
Update README file.
create /LuoYun/log in osmanager.sh
update README