Auto merge of #1938 - blaenk:environment-variables-fix, r=steveklabnik
authorbors <bors@rust-lang.org>
Tue, 25 Aug 2015 19:15:43 +0000 (19:15 +0000)
committerbors <bors@rust-lang.org>
Tue, 25 Aug 2015 19:15:43 +0000 (19:15 +0000)
#1845 seems to have forgotten to add the page to the DOCS variable in the makefile


Trivial merge