updates calabash.framework to 0.9.168.pre2
now using cucumber --no-source to reduce the amount of spam
removed @issue_310 tag because it is not applicable to this case
fixed typo in step definition
demos issue 310 - uia_type_string goes into loop when typing nonexistent key
Merge pull request #8 from jmoody/demo/1.3.0-uia-type-string-behavior-when-missing-key

demonstrates issue 310 - uia_type_string failure when key does not exist on keyboard