did some basic documentation in journal.sh

journal.sh

@@ -1,7 +1,17 @@
 #!/bin/bash
 
-# journal script for keeping 
-# track of what i do and think
+#
+#    journal script for keeping 
+#   track of what i do and think
+#
+
+
+# it makes sence you add a bash alias like this to your ~/.bashrc
+# alias='/path/to/journal.sh /path/to/outputfile.txt'
+# do that and you can use journal as follows:
+# usage: journal
+#        journal read
+#        journal edit
 
 
 #check if output file is given as first option