Add Readme.md, fix broken line

Readme.md

+# check-mk-postfix-logstats
+
+This is a fairly simple plugin for linux check_mk agents which parses your postfix logfile and returns a bunch of numbers.
+
+# Installation
+
+* Clone this repository into e.g. `/opt/check-mk-postfix-stats`.
+* Edit the `settings.sh` (There is not much to do)
+* Symlink `postfix-stats.sh` to `/usr/lib/check_mk_agent/plugins`
+

postfix-stats.sh

@@ -81,8 +81,7 @@ mo_deferred=$(          sed -n "$old_log_position","$new_log_position"p $LOGFILE
 mo_deliverable=$(       sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep '\/smtp\[' | grep 'status=deliverable'   | grep -v 'relay=127\.0\.0\.1\|relay=localhost\|relay=::1' | wc -l)
 mo_undeliverable=$(     sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep '\/smtp\[' | grep 'status=undeliverable' | grep -v 'relay=127\.0\.0\.1\|relay=localhost\|relay=::1' | wc -l)
 mo_bncd_total=$(        sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep '\/smtp\[' | grep 'status=bounced'       | grep -v 'relay=127\.0\.0\.1\|relay=localhost\|relay=::1' | wc -l)
-mo_bncd_spam=$(         sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep '\/smtp\[' | grep 'status=bounced' | grep -i 'spam' | grep -v 'relay=127\.0\.0\.1\|relay=localhost\|relay=::1' | wc 
--l)
+mo_bncd_spam=$(         sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep '\/smtp\[' | grep 'status=bounced' | grep -i 'spam' | grep -v 'relay=127\.0\.0\.1\|relay=localhost\|relay=::1' | wc -l)
 mo_bncd_reputation=$(   sed -n "$old_log_position","$new_log_position"p $LOGFILE | grep '\/smtp\[' | grep -i 'reputation'        | grep -v 'relay=127\.0\.0\.1\|relay=localhost\|relay=::1' | wc -l)
 
 # Collect inbound email statistics