Update README.md
Added the ability to specify an initialization vector to the cipher.
Fixed broken json import
Merge pull request #9 from srmelody/master

Candidate code for issue 8 - initialization vector
reverting back to e7d28046af8614e24000294d4793c6f8a0a0e74f
error framework changes
Merge branch 'master' into CL-6109902152805
minor changes, removing some redundant code