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Merge pull request #2410 from bootstraponline/1.0-beta

Run appium_doc_lint on Travis CI
Fix links
Merge pull request #2415 from bootstraponline/1.0-beta

Fix links
Fix getting started link
Merge pull request #2417 from bootstraponline/1.0-beta

Fix getting started link
Fix real devices link
Fix docs/cn/ links
Merge pull request #2418 from bootstraponline/1.0-beta

Fix doc links
Fix code links
Merge pull request #2420 from bootstraponline/1.0-beta

Fix code links
Fix readme for Slate

Quotes go in the code section
Fix more broken links
Merge pull request #2423 from bootstraponline/1.0-beta

Fix broken links
Update how to write docs
Merge pull request #2425 from bootstraponline/1.0-beta

Update how to write docs
Fix issue when iterating the entries

Every time you call entries.pop(), the entries.length minus 1.
We should check entries.length>0 as the end of loop.

This request is same as pull request #2426. fix a typo error.
Using Async.queue to queue commands