[test] automatic test case for single-instance
link to https://github.com/rogerwang/node-webkit/wiki/Using-Node-modules in README

The wiki page has been renamed (#823), and the former link is no longer valid.
Merge pull request #879 from Mithgol/patch-1

link to https://github.com/rogerwang/node-webkit/wiki/Using-Node-modules in README.md
Updates quick start instructions.

I was tired of googling the right syntax of the zip command, so I added it to the quick start instructions.
add HTML5 doctype
Merge pull request #882 from Roland1975/master

Add HTML5 doctype
Merge pull request #881 from haihappen/patch-1

Updates quick start instructions.
Merge pull request #877 from richardcypher/tests

add test case for loading remote img
Merge pull request #878 from kingFighter/single-instance

[test] automatic test case for single-instance
override origin for dom storage of devtools

Fix #98
[test] automatic test case for save devtools' settings
Merge pull request #888 from kingFighter/issue98

[test] automatic test case for save devtools' settings
add test case for proxyForURL method