Merge pull request #32 from arturl/master

reworded text for section 2.5 - exception handling, based on the latest ...
Add Apache 2 license.
Merge branch 'master' of github.com:n3554/n3554
Implement std::unique, std::unique_copy, and tests.
Implement std::reverse, std::reverse_copy, and tests.
Add build instructions for example programs.
Add first bits of the parallelism TS.
Eliminate typewriter font in header
Add N-number
Add header
Fix the margins
Fix some broken formatting
Add latest PDF
Add example codes for execution_policy
Add some additional example codes
Add a note about which namespace we expect these features to eventually
land in
Some trivial formatting changes
Add a note that we may wish to define user-provided function objects.
Add section on exceptions
Add missing header identifiers to the exceptions section
Add placeholder final section
Add algorithm specifications
for_each correctly returns InputIterator

Fixes #33