More usable and shorter aliases

plugins/encode64/encode64.plugin.zsh

 encode64(){ echo -n $1 | base64 }
-decode64(){ echo -n $1 | base64 -D }
\ No newline at end of file
+decode64(){ echo -n $1 | base64 -D }
+alias e64=encode64
+alias d64=decode64