webtry: More README doc cleanups.

experimental/webtry/README.md

-WebTry
-======
+WebTry Server
+=============
 
 Allows trying out Skia code in the browser. Run a local webserver
 and from the pages it serves try out Skia code and see the results
 immediately. To make sandboxing easier this must be built w/GPU off.
 
+
 Running Locally
 ===============
 
     $ GYP_GENERATORS=ninja ./gyp_skia gyp/webtry.gyp gyp/most.gyp -Dskia_gpu=0
     $ ninja -C out/Debug webtry
     $ cd experimental/webtry
     $ go get -d
     $ go build webtry.go
     $ ./webtry
 
 Then visit http://localhost:8000 in your browser.
 
 Only tested under linux, doubtful it will work on other platforms.
 
-Full Server Setup
-=================
+
+Server Setup
+============
 
 Create a GCE instance:
 
     gcutil --project=google.com:skia-buildbots addinstance skia-webtry-b \
       --zone=us-central2-b --external_ip_address=108.170.220.126 \
       --service_account=default \
       --service_account_scopes="https://www.googleapis.com/auth/devstorage.full_control" \
       --network=default --machine_type=n1-standard-1 --image=backports-debian-7-wheezy-v20140331 \
       --persistent_boot_disk
 
 Make sure port 80 is accessible externally for the above instance.
 
 SSH into the instance:
 
     gcutil --project=google.com:skia-buildbots ssh --ssh_user=default skia-webtry-b
 
 
-Do once
--------
+Do the first time
+=================
 
-The following things only need to be done once
+The following things only need to be done once.
 
-1. sudo apt-get install git schroot debootstrap
-2. git clone https://skia.googlesource.com/skia
-3. Add the following to /etc/fstab and reboot:
+1. SSH into the server as default.
+2. sudo apt-get install git schroot debootstrap
+3. git clone https://skia.googlesource.com/skia
+4. cd ~/skia/experimental/webtry/setup
+5. ./webtry_setup.sh
+
+6. Add the following to /etc/fstab and reboot:
 
     none /dev/shm tmpfs rw,nosuid,nodev,noexec 0 0
 
 The above will allow ninja to run. See http://stackoverflow.com/questions/2009278/python-multiprocessing-permission-denied
 
-4. Add the following to the /etc/schroot/minimal/fstab:
+7. Add the following to the /etc/schroot/minimal/fstab:
 
     /home/webtry/inout             /inout  none    rw,bind         0       0
 
-5. Change /etc/monit/monitrc to:
+8. Change /etc/monit/monitrc to:
 
     set daemon 2
 
 then run the following so it applies:
 
     sudo /etc/init.d/monit restart
 
 This means that monit will poll every two seconds that our application is up and running.
 
-6. Set the TCP keepalive. For more info see:
+9. Set the TCP keepalive. For more info see:
    https://developers.google.com/cloud-sql/docs/gce-access
 
     sudo bash -c 'echo 60 > /proc/sys/net/ipv4/tcp_keepalive_time'
 
-Do the first time
------------------
+Once, after setup
+=================
 
-Do the following the first time you setup a machine, and each time you want to update the code running on the server
-
-    cd ~/skia/experimental/webtry/setup
-    ./webtry_setup.sh
-
-
-Once, after setup
------------------
-
-Do this step only once, but only after running webtry_setup.sh the first time
+Do this step only once, but only after running webtry_setup.sh the first time.
 
     sudo debootstrap --variant=minbase wheezy /srv/chroot/webtry
 
 
+To update the code
+==================
+
+1. SSH into the server as default.
+2. cd ~/skia/experimental/webtry/setup
+3. git pull
+4. ./webtry_setup.sh
+
+
 Third Party Code
-----------------
+================
 
   * res/js/polyfill.js - Various JS polyfill libraries. To rebuild or update
     see poly/README.md.