Update README.md (#2)

Fix readme and thresholds

README.md

@@ -1,37 +1,37 @@
-i3-battery-warning
-==================
+# i3-battery-warning
 
+This is a simple battery warning script. It uses i3's nagbar to display warnings. Let this script run as a cronjob.
 
-This is a simple battery warning script. It uses i3's nagbar to display warnings.
+Open your crontab:
 
-Let this script run as a cronjob.
+```Shell
+crontab -e
+```
 
-Open your crontab.
+Add the following line to check battery status every minute:
 
-$ crontab -e
+```
+*/1 * * * * /PATH/TO/YOUR/SCRIPT/i3-batwarn
+```
 
-Add the following line to check battery status every minute
+If the need to trouble shoot arises one could pipe the cron job output to a file like:
 
-*/1 * * * * /PATH/TO/YOUR/SCRIPT/i3batwarn.sh
+```
+*/1 * * * * /PATH/TO/YOUR/SCRIPT/i3-batwarn > /tmp/batterywarn.log
+```
 
-If the need to trouble shoot arises one could pipe the cron job output to a file like
+If the script only works when invoked from terminal and not as a crobjob:
 
-*/1 * * * * /PATH/TO/YOUR/SCRIPT/i3batwarn.sh > /tmp/batterywarn.log
+```
+*/1 * * * * DISPLAY=:0 /PATH/TO/YOUR/SCRIPT/i3-batwarn
+```
 
-If the script only works when invoked from terminal and not as a cronjob it might help to specify
-
-DISPLAY=:0
-
-in the cron tab (before calling this script).
-
-screenshot
-==========
+## screenshot
 
 ![ScreenShot](screenshot.png)
 
-fork changes
-============
+## fork changes
 
-Added a pidfile where the pid of each (one max) nagbar is saved
-and a check to kill the nagbar if the battery is above the limit.
-This usually works but sometimes the nagbar has to be closed manually.
+* Added a warning level in addition to existing threshold
+* Check more often for the charger when de nagbar is active
+* Major refactoring 

i3-batwarn

@@ -8,10 +8,10 @@
 #############################################
 
 BATTERY="$(echo '/sys/class/power_supply/BAT'?)"	# Battery file
-WARNING_THRESHOLD='99'					# Set energy limit in percent, where warning should be displayed
-EMERGENCY_THRESHOLD='98'				# Set energy limit in percent, where emergency should be displayed
+WARNING_THRESHOLD='30'					# Set energy limit in percent, where warning should be displayed
+EMERGENCY_THRESHOLD='15'				# Set energy limit in percent, where emergency should be displayed
 LOCK_FILE='/var/lock/battery_state.lock'		# Lock file location
-PID_FILE="/run/user/${UID}/nagbar.pid"				# Save pid for killing later
+PID_FILE="/run/user/${UID}/nagbar.pid"			# Save pid for killing later
 
 # get battery status
 get_status() {