Files that must be read before building nmh should not go in the docs directory.  Moved this file back to the top level (and made a couple of stylistic and grammar tweaks while I was at it).
Files that must be read before building nmh should not go in the docs
directory.  Moved this file back to the top level (and made a couple of
stylistic and grammar tweaks while I was at it).

dscho/nmh,dscho/nmh,mcr/nmh,dscho/nmh,dscho/nmh,mcr/nmh