Updated Update pages

- added update from c2
- renamed update to update padd

Updating from Chronometer2.md

@@ -0,0 +1,23 @@
+To update PADD from chronometer2:
+- Get the latest version of PADD:
+```bash
+cd ~
+wget -N https://raw.githubusercontent.com/jpmck/PADD/master/padd.sh
+chmod +x padd.sh
+```
+- Edit the end of `~/.bashrc`:
+```bash
+# Run PADD
+# If we're on the PiTFT screen (ssh is xterm)
+if [ "$TERM" == "linux" ] ; then
+    while :
+    do
+      ./padd.sh
+      sleep 1
+    done
+fi
+```
+- Remove the old chronometer2 script:
+```bash
+rm -f chronometer2.sh
+```