add --json flag to apm ls
grab package metadata from package.json as well
Use better syntax for checking callback existence
Add instruction to install libgnome-keyring-dev

It is doing this in TravisCI test.
Add verbose argv for install command.

This command will set `request` to debug mode to output logs.
Stream output only if verbose mode.
Add more streaming option in fork invoke.
Remove a redundant setting.
:bug: fix #231

fix typo
Merge pull request #232 from despairblue/patch-1

:bug: fix #231
0.112.0
0.113.0
Merge pull request #222 from lijunle/Readme

Add instruction to install libgnome-keyring-dev
:memo: Mention keyring is linux only
:lipstick:
Always pull bundled package metadata from _atomPackages

This fixes a regression when the package metadata cache
was originally introduced and the versions no longer were printed
for bundled packages in apm ls.
Keep options sorted
Nest listing of installed packages
Merge pull request #216 from atom/dh-ls-json

WIP: add --json flag to apm ls
Merge pull request #223 from lijunle/verbose

Add verbose argument for install command.