[Android] Add --package option for make_apk

After https://github.com/crosswalk-project/crosswalk/pull/2214,
--package option is mandatory and should be set to the Java package name.
Merge pull request #137 from jinbang/package_name_required

[Android] Add --package option for make_apk
Crosswalk 8 test results chart
Update build deps

Fixes https://crosswalk-project.org/jira/browse/XWALK-1911
Merge pull request #140 from crosswalk-project/build-deps-1911

Update build deps
[remote debugging] Merge wiki info

Merge information from the wiki page about remote debugging:

https://crosswalk-project.org/#wiki/Remote-Debugging-on-Android

into the main website.

Fixes https://crosswalk-project.org/jira/browse/XWALK-2167
Merge pull request #141 from crosswalk-project/remote-debug-2167

[remote debugging] Merge wiki info
Bump stable and beta versions to 7 and 8 respectively
[WebRTC] Use stable version macro instead of hard-coding

Ensure that the version of Crosswalk referenced is the current
stable version, rather than hard-coding it to version 6.
Use a custom gollum with Thin server to improve performance

This makes it easier to tell when gollum is or isn't available
(I can properly track the pid using a file), reduces the gollum
start up time (by a factor of 10), and slightly improves the time
taken for translating mark-up to HTML (mainly because the HTTP
requests return slightly faster).
Merge pull request #142 from crosswalk-project/gollum-improvements

Use a custom gollum with Thin server to improve performance
Add 'Crosswalk screens' article
Add details about how to install sample game
Add missing explanatory sections
Minor tweaks after proof reading
Add page about screen measurements
Update samples pages with space-dodge-game description

The space-dodge-game developed in the "screens" tutorial is
in the crosswalk-samples repo, so update the samples page
with details.