Problem running coveralls.sh

Hello I am trying to use the shell script coveralls.sh to upload my test coverage to coveralls. Unfortunately this doesn't work and I get some errors when running this script.

Here is the relevant part from my travis-ci build:

```
The command "xctool test -workspace PinFever.xcworkspace -scheme PinFeverTests -sdk iphonesimulator8.1 ONLY_ACTIVE_ARCH=NO GCC_GENERATE_TEST_COVERAGE_FILES=YES" exited with 0.
$ ./coveralls.sh
2015-06-16 21:13:16.496 xctool[2444:2b07] Should have either a workspace or a project.
./coveralls.sh: line 17: printf: `': not a valid identifier
//*.gcno:cannot open graph file
/Users/travis/build/unverschaemt/Pin-Fever-iOS
cp: ///.DocumentRevisions-V100: unable to copy extended attributes to gcov/.DocumentRevisions-V100: Permission denied
cp: ///.DocumentRevisions-V100: Permission denied
cp: ///.file: Permission denied
cp: ///.fseventsd: unable to copy extended attributes to gcov/.fseventsd: Permission denied
cp: ///.fseventsd: Permission denied
cp: ///.hotfiles.btree: Permission denied
cp: ///.Spotlight-V100: unable to copy extended attributes to gcov/.Spotlight-V100: Permission denied
cp: ///.Spotlight-V100: Permission denied
cp: ///.Trashes: unable to copy extended attributes to gcov/.Trashes: Permission denied
cp: ///.Trashes: Permission denied

```

Link to the build can be found here: https://travis-ci.org/unverschaemt/Pin-Fever-iOS/builds/67099253.

can you help me with this one ?
Thanks.