minor change of the wording for the error to reflect that we need the path to the mojit like mojits/Bar not just its name
Added new section on the selector property to clarify its purpose and provide examples.
Made a few edits and added an example in the table, fixed formatting.
Fixed a table.
Merge pull request #543 from zhouyaoji/docs_select_property_section

[docs] Elaborated on how the select property is used with examples and a more detailed description.
Fixed missing var declaration.
Merge pull request #495 from isao/issue13

fix issue #13 ContextController cache never cleans up
merging for 0.4.x users
update yql api key
Merge pull request #550 from lzhan/updateapps

update yql api key
Merge branch 'develop' into develop-perf
store.validateContext() does stuff again
Correcting views_multiple_devices example.
Merge pull request #551 from zhouyaoji/docs_select_property_section

Correcting views_multiple_devices example.
Fixed code review issues.
Merged upstream changes.
Fixed the dynamic assets example, so that it uses the 'selector' property.
Merge pull request #552 from zhouyaoji/docs_select_property_section

Fixed the dynamic assets example, so that it uses the 'selector' property and a separate context for iPhone devices.
update yql api key for example apps
FIX for routemaker and middleware router
Merge remote-tracking branch 'upstream/develop' into develop