implement constructWithArguments
add subscript support for XJSContext
subscript will auto convert object to XJSValue
use subscripter in test
implement invokeMethod
create global namespace for binding entry
rename XJSRuntimeEntryClass to XJSRuntimeEntry
fix a conversion warning
implement selector search
able to associate objc object with js object
add method to create XJSValue from NSObject
assert context no nil
add test case
runtime entry will return objc wrapper obj
able to call objc method from js