clean-up and rename separator.sh file to fix typo.

For some reason, I have a habit of spelling separator as 'seperator' and it
takes my a while to notice the mistake.

Clean-up involves adding comments and removing unused code.

separator.sh

@@ -1,15 +1,36 @@
 #!/bin/bash
 
-singleBreakdown () {
-    echo "time,reading" > "data/light-meter-1/2021-06-14.csv";n
-    grep "2021-06-14" "datalm1-exhibiton-all.csv" >> "data/light-meter-1/2021-06-14.csv";    
-}
+# SEPARATOR
+# ==============================================================================
+# This script takes the lm1-exhibition-all.csv and lm2-exhibition-all.csv files
+# and splits the readings down into daily and hourly segments. The breakdowns
+# are placed in their own directories and should look like the following:
+
+# data
+# ├── light-meter-1
+# |   │   ├── hourly readings directory (E.G. 2021-07-14/)
+# |   │   |   └──hourly reading files   (E.G. 2021-07-14--14.csv)
+# |   │   └── hourly readings directory (E.G. 2021-07-15/)
+# |   │       └── hourly reading files  (E.G. 2021-07-15--17.csv)
+# │   └── daily readings files (E.G 2021-07-14.csv)
+# │   └── daily readings files (E.G 2021-07-15.csv)
+# ├── light-meter-2
+# |       └── repeats light-meter-1 structure...
+# ├── lm1-exhibiton-all.csv
+# └── lm2-exhibiton-all.csv
+# 
+# 2 directories, 2 files
+
+# Note: Naming Format for Hourly Breakdowns (YYYY-MM-DD--HH)
+# ==============================================================================
+# The last part of the file name specifies the hour the readings were taken
+# from. So, '2021-07-15--17.csv' means the readings for that file were taken on
+# the 15th July 2021 between 17:00 and 18:00 (5pm and 6pm).
 
 hourBreakdown () {
-    d="$1"; # Day
-    m="$2"; # Month
+    d="$1";   # Day
+    m="$2";   # Month
     mtr="$3"; # Light Meter (either 1 or 2)
-    # echo "Day: $d | Month: $m | Meter: $mtr";
     mkdir -p "data/light-meter-$mtr/2021-$m-$d";
     for hour in {0..24}; do
         if [[ $hour -lt 10 ]]; then
@@ -27,8 +48,6 @@ dailyBreakdown () {
     mkdir -p "data/light-meter-$lm";
     for month in {6..8} ; do
         for day in {1..31} ; do
-            # echo "2021-0$month-$day Meter: $1";
-            # hourBreakdown $day $month $lm;
             if [[ $day -lt 10 ]]; then
                 touch "data/light-meter-$lm/2021-0$month-0$day.csv";
                 echo "time,reading" > "data/light-meter-$lm/2021-0$month-0$day.csv";
@@ -52,7 +71,5 @@ dailyBreakdown () {
     done
 }
 
-# singleBreakdown
-dailyBreakdown "1";
-dailyBreakdown "2";
-# hourBreakdown
+dailyBreakdown "1"; # Light Meter 1
+dailyBreakdown "2"; # Light Meter 2