Adds check for get_attr in jsaction event.js before getting role.
	Change on 2014/05/22 by tnicole <tnicole@google.com>
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=67772218
Add names to dispatch_auto, eventcontract_auto, and eventcontract_example
for use by open source compiler.

OSS library is built as such:

java -jar compiler.jar \
--js='./jsaction/**.js' \
--js='./closure-library/**.js' \
--closure_entry_point=jsaction.EventContractAuto \
--compilation_level ADVANCED \
--only_closure_dependencies
	Change on 2014/05/23 by nnaze <nnaze@google.com>
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=67866688
Update README with barebones instructions on how to build
JsAction with open-source compiler.
	Change on 2014/05/23 by nnaze <nnaze@google.com>
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Created by MOE: http://code.google.com/p/moe-java
MOE_MIGRATED_REVID=67866714