codereview: make commit -a the default; warn about uncommitted changes at upload

also update README.md for github

Change-Id: I7d578a902ffed7f6d69780721e29a1972b6f6992

README.md

diff --git a/README.md b/README.md
index 8cec190..9f3af58 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,7 @@
 This is a port of many Plan 9 libraries and programs to Unix.
 
-* Installation
+Installation
+------------
 
 To install, run ./INSTALL.  It builds mk and then uses mk to
 run the rest of the installation.  
@@ -8,7 +9,8 @@
 For more details, see install(1), at install.txt in this directory
 and at http://swtch.com/plan9port/man/man1/install.html.
 
-* Documentation
+Documentation
+-------------
 
 See http://swtch.com/plan9port/man/ for more documentation.
 (Documentation is also in this tree, but you need to run
@@ -17,21 +19,28 @@
 Intro(1) contains a list of man pages that describe new features
 or differences from Plan 9.
 
-* Helping out
+Helping out
+-----------
 
 If you'd like to help out, great!  The TODO file contains a small list.
 
 If you port this code to other architectures, please share your changes
 so others can benefit.
 
-Please use diff -u or CVS (see below) to prepare patches.
+Please use codereview(1) to prepare patches.
 
-* CVS
+Git
+---
 
-You can use CVS to keep your local copy up-to-date as we make 
-changes and fix bugs.  See the cvs(1) man page here ("9 man cvs")
-for details on using cvs.
+You can use Git to keep your local copy up-to-date as we make 
+changes and fix bugs.  See the git(1) man page here ("9 man git")
+for details on using Git.
 
-* Contact
+Contact
+-------
 
-Russ Cox <rsc@swtch.com>
+* Mailing list: http://groups.google.com/group/plan9port-dev
+* Issue tracker: http://code.swtch.com/plan9port/issues/
+* Submitting changes: http://swtch.com/go/codereview
+
+* Russ Cox <rsc@swtch.com>

bin/codereview

diff --git a/bin/codereview b/bin/codereview
index 6fd3e11..6606a5c 100755
--- a/bin/codereview
+++ b/bin/codereview
Binary files differ

man/man1/codereview.1

diff --git a/man/man1/codereview.1 b/man/man1/codereview.1
index 0b713c4..ec528b2 100644
--- a/man/man1/codereview.1
+++ b/man/man1/codereview.1
@@ -13,18 +13,12 @@
 ]
 .B create
 .I name
-[
-.B -a
-]
 .PP
 .B codereview
 [
 .B -v
 ]
 .B commit
-[
-.B -a
-]
 .PP
 .B codereview
 [
@@ -60,6 +54,10 @@
 using
 .I codereview
 .IR create .
+Once a feature branch is created, files can still be edited, but they must then be
+incorporated into the change by using
+.I codereview
+.IR commit .
 .I Git
 requires that changes be added to a ``staging area'' before the initial commit,
 using commands such as
@@ -69,16 +67,18 @@
 .I git
 .IR rm .
 The 
-.B -a
-option causes
 .I codereview
 .I create
-to add all local modifications to the staging area as part of the initial commit.
-.PP
-Once a feature branch is created, files can still be edited, but they must then be
-incorporated into the change by using
+and
 .I codereview
-.IR commit .
+.I commit
+commands
+automatically move all local modifications to the staging area
+as part of the commit,
+using
+.I git
+.I commit
+.IR -a .
 .PP
 If other changes have been committed since the feature branch was created,
 .I codereview