add author list
add changelog
Merge pull request #26 from piti118/better_integral_binlh

Add author list and changelog
skip gh-pages
Merge pull request #27 from piti118/better_integral_binlh

skip gh-pages in travis
update doc formatting
Merge pull request #28 from piti118/better_integral_binlh

update doc formatting
Add mechanism to do analytical/custom integral
add change log
Merge pull request #29 from piti118/better_integral_binlh

Add mechanism to do analytical/custom integral
Merge upstream