updated help text and added manpage section for hg paths
Index: hg/doc/hg.1.txt
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+ hg clone a b
abort: repository a/.hg not found!
255
+ hg clone http://127.0.0.1:3121/a b
requesting all changes
abort: error: Connection refused
255
+ hg clone a b
abort: repository a/.hg not found!
255
+ hg init
+ hg clone . ../a
abort: destination '../a' already exists
1
+ hg clone a b
abort: repository a/.hg not found!
255
+ hg init
+ hg clone q
abort: destination 'q' already exists