changed println to logger
updated logging
updated the command runner that it is always used

updated the xcode test target to use the output appender
updated the xcodebuild update.
added support for warnings
reformatted the output
fixed that error is properly processed
updated unit test output
added test info to the unit test output
added that on error the xcodebuild log is stored
fixed that no IndexOutOfBoundsException is throw when the source file is not found: issue #34
updated the xcodebuild output so that als compiling of .c files is shown
also added linking output
prepared release 0.9.1