Added more text to README

README.md

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 # mfbatch
+
+I've been reorganzing my sound effects library recently and have had to edit a 
+large number of FLAC files, adding and editing descriptions, normalizing 
+fields etc. and this is one of the tools I've come up with for updating a large
+number of FLAC files in an easy qay quickly. It works completely in the command
+line and is designed to be used with your favorite text editor.
+
+## Workflow
+
+1) Create a new `MFBATCH_LIST` file for a directory of FLAC files.
+
+```sh 
+$ cd path/to/my/flacs 
+$ mfbatch -c 
+```
+
+2) Edit the `MFBATCH_LIST` file in vim, or nano, or whatever your favorite text
+editor is.
+
+```sh 
+$ mfbatch --edit
+```
+
+The `MFBATCH_LIST` file will contain a transcript of all of the flac files 
+in the selected folder along with their current metadata.
+
+```sh 
+
+:set ALBUM 'Test Album 1'
+:set DESCRIPTION 'Tone file #1, test tone 440Hz'
+./tone1.flac
+
+:set DESCRIPTION 'Tone file #2, also 440Hz'
+./tone2.flac
+:unset DESCRIPTION
+
+./tone3.flac
+```
+
+3) After you've made the changes you want to make, write them to the files.
+
+```sh 
+$ mfbatch -W
+```