Merge pull request #1845 from Hzj-jie/master

Mount SD card as RW on kobo, but ignore errors

platform/kobo/koreader.sh

@@ -80,6 +80,13 @@ if [ ! -n "${PLATFORM}" ] ; then
 fi
 # end of value check of PLATFORM
 
+grep ' /mnt/sd ' /proc/mounts | grep 'ro'
+# Remount SD to RW if it's RO
+if [ $? -eq 0 ]
+then
+    mount -o remount,rw /mnt/sd
+fi
+
 ./reader.lua "${args}" 2> crash.log
 
 if [ "${from_nickel}" == "true" ] ; then