Added battery indicator script to tmux config

bin/battery_indicator.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+# modified from http://ficate.com/blog/2012/10/15/battery-life-in-the-land-of-tmux/
+
+HEART='♥ '
+
+if [[ `uname` == 'Linux' ]]; then
+  current_charge=$(cat /proc/acpi/battery/BAT1/state | grep 'remaining capacity' | awk '{print $3}')
+  total_charge=$(cat /proc/acpi/battery/BAT1/info | grep 'last full capacity' | awk '{print $4}')
+else
+  battery_info=`ioreg -rc AppleSmartBattery`
+  current_charge=$(echo $battery_info | grep -o '"CurrentCapacity" = [0-9]\+' | awk '{print $3}')
+  total_charge=$(echo $battery_info | grep -o '"MaxCapacity" = [0-9]\+' | awk '{print $3}')
+fi
+
+charged_slots=$(echo "((($current_charge/$total_charge)*10)/3)+1" | bc -l | cut -d '.' -f 1)
+if [[ $charged_slots -gt 3 ]]; then
+  charged_slots=3
+fi
+
+echo -n '#[fg=red]'
+for i in `seq 1 $charged_slots`; do echo -n "$HEART"; done
+
+if [[ $charged_slots -lt 3 ]]; then
+  echo -n '#[fg=white]'
+  for i in `seq 1 $(echo "3-$charged_slots" | bc)`; do echo -n "$HEART"; done
+fi