[PATCH] readme: Mention how to run Mercurial inplace

[Ross Lagerwall]

# HG changeset patch
# User Ross Lagerwall <rosslagerwall at gmail.com>
# Date 1330717435 -7200
# Node ID 2ab9cba7ea3f79d2deffb21cb0e9b8d838c1a3a7
# Parent  0196c437ca9fc26d872b21286bee6959f1cd73e6
readme: Mention how to run Mercurial inplace.

The README describes how to install Mercurial but it does not describe how to
run it in place (for developers). This adds a short paragraph to the README
describing how to do run Mercurial inplace.

diff --git a/README b/README
--- a/README
+++ b/README
@@ -11,5 +11,10 @@
  $ hg debuginstall # sanity-check setup
  $ hg              # see help
 
+Running without installing:
+
+ $ make local      # build for inplace usage
+ $ ./hg --version  # should show the latest version
+
 See http://mercurial.selenic.com/ for detailed installation
 instructions, platform-specific notes, and Mercurial user information.