Document the [replace] section
authorAlex Crichton <alex@alexcrichton.com>
Thu, 30 Jun 2016 16:50:43 +0000 (09:50 -0700)
committerAlex Crichton <alex@alexcrichton.com>
Wed, 6 Jul 2016 18:14:15 +0000 (11:14 -0700)
commit46f84667900345e5acc8d7076885115c4f25fee9
treec1b347d6de2ca0111b46ebdb101d381b19c2c281
parentaf5dd4f53359ccc1bbb6bb7708183fce3d11ea4e
Document the [replace] section

Thought I did this before, but apparently forgot!
src/doc/manifest.md
src/doc/specifying-dependencies.md