catch the possible exception where srpA might be a bad value or when generating srpB
added a test
moved test, added additional try / catch blocks to make sure to catch all possible srp errors
Merge github.com:SpiderOak/crypton into catch-exceptions-srp
reomved one unneeded try/catch
removed commented try catch, whoops
new test and try catch focused on continueSrp() only
Changed double to single quotes, reomved method name in error message
changed test as well
Merge pull request #235 from daviddahl/catch-exceptions-srp

Catch exceptions srp