Portable computing language says it implement's opencl 1.2 but really does not
add exercise 7
add ex08
add example 9
Update .travis.yml

add more examples to travis build
return int for kernel size queries
use absolute paths to kernel files for hands_on_examples
refactor work_group_info for kernels
add exA
update .travis.yml
improvements to performance example
remove exA
update to create any context by default
readd exA tests
remove print
missing device
suppress warning of converting between signed/unsigned ints
add warning for out of order command queues
fix failing tests
remove accidently pasted code