fixing ERR
adding err.png back
Merge pull request #3 from nightscout/master

err fix
R5.1 Cache fix for iPhone refresh problems
R5.1 Ignore cache for iPhone refresh problems
Merge pull request #32 from nightscout/5.1

5.1 Ignore cache for iPhone refresh problems
Merge pull request #4 from nightscout/master

10.16.14
Merge pull request #13 from jimsiff/master

10.16.14