Merge branch '6-readme-md-doesn-t-explain-what-this-is-doing' into 'master'

Resolve "README.md doesn't explain what this is doing"

Closes #6

See merge request atom/AtOM!13

README.md

@@ -1,5 +1,35 @@
 # AtOM: Anything to Ogg and Mp3
 
+This program is for you if
+1. you want to have your music collection in the highest quality possible
+2. you have devices that don't have enough storage to hold it or
+3. you have devices that support a limited number of formats
+
+To satisfy that need, we take a "source" directory, inventory and read tags for
+every file therein. From that, we can create and maintain copies of said 
+directory in other formats or quality. There is also the possibility of 
+ignoring or simply copying files with certain mime-types or extensions.
+
+We try to do this in a *smart* way, by only treating files that are new or 
+changed since the last run. 
+
+Apart from transcoding from one format to another, AtOM can also change 
+sample-rate, bitrate, and the number of channels! Say, for example, that you 
+want to stream your music through icecast. In addition to having all the files 
+in the same format, it will want a constant sample-rate and bitrate. You can 
+have AtOM do that!
+
+Here's what I have for my tests:
+| Directory | Format | Frequency | Bitrate | Channels | FAT32 compat. | ASCII | Size |
+| --------- | ------ | --------- | ------- | -------- | ------------- | ----- | ---- |
+| 0-Full    | Mixed  | Mixed     | Mixed   | Mixed    | No            | No    | 508G |
+| 1-High    | Opus   | Same      | 128     | Same     | Yes           | No    | 101G |
+| 2-Medium  | Opus   | Same      | 64      | Same     | Yes           | No    | 59G  |
+| 3-Small   | Opus   | Same      | 32      | Same     | Yes           | No    | 30G  |
+| 4-MP3     | MP3    | 44100     | 128     | 2        | Yes           | Yes   | 114G |
+
+
+
 * URL: https://framagit.org/ScriptFanix/AtOM/
 * Author: Vincent Riquer <vincent+prog.atom@riquer.fr>
 * Copyright/left: 2012-2013,2015,2025 Vincent Riquer - GPLv3
@@ -11,7 +41,7 @@
 * [SQLite](http://www.sqlite.org/)
 
 ### Optional:
-Some features will not be available.
+**Some features will be disabled** when not present.
 * [vorbis-tools](http://www.vorbis.com/)
     * `ogginfo` (Ogg Vorbis metadata)
     * `oggenc` (Ogg Vorbis encoding)
@@ -41,7 +71,7 @@ If, however, you still want to make changes manually, please read doc/config.
 There are a lot of comments in the generated config file too.
 
 ### Preparing data:
-Nothing specific needs to be done. You can edit ypur tags, rename files, move
+Nothing specific needs to be done. You can edit your tags, rename files, move
 them around how you see fit. However, make sure you setup your tag editor
 to *do* update the files' timestamps: though it was initially plan to make this
 optional, using checksums or tags, it was abandoned due to the huge amount of