Add another alias for clear and add some more aliases to alias-help

aliases/general.aliases.bash

@@ -17,6 +17,7 @@ fi
 
 alias c    = 'clear'
 alias k    = 'clear'
+alias cls  = 'clear'
 
 alias edit = "$EDITOR"
 alias page = "$PAGER"
@@ -53,7 +54,7 @@ function aliases-help() {
   echo "  la      = ls -AF"
   echo "  ll      = ls -al"
   echo "  l       = ls -a"
-  echo "  c/k    = clear"
+  echo "  c/k/cls = clear"
   echo "  ..      = cd .."
   echo "  ...     = cd ../.."
   echo "  -       = cd -"
@@ -65,5 +66,8 @@ function aliases-help() {
   echo "  piano   = pianobar"
   echo "  q       = exit"
   echo "  irc     = $IRC_CLIENT"
+  echo "  md      = mkdir -p"
+  echo "  rd      = rmdir"
+  echo "  rb      = ruby"
   echo
 }