add cd line to install instructions
Merge pull request #135 from mk270/add-cd

add cd line to install instructions
ocaml is popular too :)

also remove superfluous "Note that"
Merge pull request #137 from timruffles/patch-1

ocaml is popular too :)
Update map.html

Some grammatical and syntactic mistakes were corrected, one of the most prominent ones being the use of "are" instead of "our".
Merge pull request #138 from Zeldy/patch-1

Update map.html