Update docs

Author: Mike Seidle

README.md

@@ -9,5 +9,6 @@ GNU GPL V2 - http://www.gnu.org/licenses/gpl-2.0.html
 What's in here?
 ---------------
 * /ubuntu - Ubuntu specific scripts
-  * *clean-kernel-images.sh* - Script for removing old kernels from /boot. In other news, Ubuntu server defaults to a tiny /boot partition and after 5-10 upgrades it runs out of space. 
+  * *clean-kernel-images.sh* - Script for removing old kernels from /boot. Useful when /boot is full. In other news, Ubuntu server defaults to a tiny /boot partition and after 5-10 upgrades it runs out of space if your forget to autoclean.
+
 

ubuntu/clean-kernel-images.sh

@@ -3,6 +3,8 @@
 # clean-kernel-images.sh
 # ----------------------
 # removes old kernel images from /boot 
+#
+# useful when apt cannot run becasue your /boot drive is full.
 # 
 # does so by creating a list of kernel images in /tmp/oldimages and 
 # then calling apt-get purge for each. Use this two ways:
@@ -34,4 +36,4 @@ function cleankernelimages()
 {
     cleankernelimages
     removeoldkernels
-}
+}