Fix typo in README.md.
Merge pull request #6 from ahmedcharles/patch-1

Fix typo in README.md.
equal_range, equal_range_n and tests, optimizations for enumerate and distance, add ostream_iterator
Merge branch 'master' of github.com:ericniebler/range-v3
Fix typo's in equal_range_n.
Merge pull request #7 from ahmedcharles/patch-2

Fix typo's in equal_range_n.