Deprecated exit code 5 and corrcted cronwrapper and enhanced README (#148)

* Deprecated exit code 5 and corrcted cronwrapper and enhanced README

- plexupdate.sh will consider no new version as success
- cronwrapper will not print anything unless it truly fails
- README.md updated to provide more details about .plexupdate

* Moved text from README.md to wiki and added notifyonreturn to cron

* Removed overthought part

README.md

@@ -161,6 +161,10 @@ But here are some of the more useful ones:
 
 See explanation in the top of this document.
 
+## Do I have to use the `extras/installer.sh` ?
+
+Of course not, anything you find under `extras/` is optional and only provided as a easier way to get `plexupdate.sh` up and running quickly.
+
 ## What email and password are you talking about
 
 The email and password for http://plex.tv
@@ -172,3 +176,7 @@ If you use certain characters (such as `$`) in your password, bash will interpre
 i.e. `PASS="MyP4$$w0rD"` will not work, but changing to it to `PASS='MyP4$$w0rD'` will
 
 If it's still not working, run `plexupdate.sh` with `-v` which prints out the email and password used to login which might help you understand what the problem is.
+
+# Not finding what you're looking for?
+
+See https://github.com/mrworf/plexupdate/wiki for more information

extras/cronwrapper

@@ -14,10 +14,6 @@
 # LOGGING if true, logs all output to syslog daemon facility
 #         (typically /var/log/daemon.log or /var/log/syslog)
 #
-# Set CONFIGURED to true once you've setup the previous three
-# options.
-#
-
 
 if [ ! -f /etc/plexupdate.cron.conf ]; then
 	echo "ERROR: You have not configured /etc/plexupdate.cron.conf" >&2
@@ -59,12 +55,9 @@ else
 	RET=$?
 fi
 
-if [ $RET -ne 2 -a $RET -ne 5 ]; then
-	# Make sure user gets an email about this
+if [ $RET -ne 0 ] ; then
+	# Make sure user gets an email about this (when not success or if user has specified when)
 	cat ${LOGFILE} >&2
-else
-	# Nah, not important
-	RET=0
 fi
 
 rm "${LOGFILE}" 2>/dev/null

plexupdate.sh

@@ -24,7 +24,6 @@
 #         2 if file already downloaded
 #         3 if page layout has changed.
 #         4 if download fails
-#         5 if version already installed
 #         6 if update was deferred due to usage
 #
 # All other return values not documented.
@@ -563,7 +562,7 @@ fi
 
 if [[ $FILENAME == *$INSTALLED_VERSION* ]] && [ "${FORCE}" != "yes" -a "${FORCEALL}" != "yes" ] && [ ! -z "${INSTALLED_VERSION}" ]; then
 	info "Your OS reports the latest version of Plex ($INSTALLED_VERSION) is already installed. Use -f to force download."
-	exit 5
+	exit 0
 fi
 
 if [ -f "${DOWNLOADDIR}/${FILENAME}" ]; then