added acknowledgement for bug report
updated command and base_hamiltonian to catch std::exception instead of std::domain_error to catch all Boost math and Stan throws, fixes #476
Merge branch 'develop' into bugfix/issue-476-more-catch-and-reject

Conflicts:
	src/test/CmdStan/command_test.cpp
adding test for stan/gm/command.hpp's init_adapt
Merge branch 'develop' into bugfix/issue-476-more-catch-and-reject

Conflicts:
	src/stan/gm/command.hpp
	src/stan/mcmc/hmc/hamiltonians/base_hamiltonian.hpp
	src/test/CmdStan/command_test.cpp
Merge pull request #531 from stan-dev/bugfix/issue-476-more-catch-and-reject

Fixes #476.