updated README

README.md

@@ -1,2 +1,77 @@
 # ffiler
 File Filer; sorts files into various filing patterns such as by date, file hash, file prefix etc
+
+# Usage
+
+## By Modified Timestamp
+This will sort files into a tree structure based on the modified timestamp of
+the file.
+
+### Example
+An example tree (directories only) filing to a depth of 2 (YYYY/Month/):
+
+```
+├── 2014
+│   ├── 01-Jan
+│   ├── 02-Feb
+│   ├── ...
+│   ├── 11-Nov
+│   └── 12-Dec
+└── 2015
+    ├── 01-Jan
+    ├── 02-Feb
+    ├── 03-Mar
+    ├── 04-Apr
+    └── 05-May
+ ```
+
+### Syntax
+* Sort to 1-level (YYYY/): `ffiler -y tosort/*`
+* Sort to 2-levels (YYYY/Month/): `ffiler -m tosort/*`
+* Sort to 3-levels (YYYY/Month/Day/): `ffiler -d tosort/*`
+
+## By MD5 Hashes
+Hash either the file *name* or the file *content* (slower), then place the file
+into a tree based on the number of characters at the start of the hash.
+
+### Example
+An example tree (directories only) filing to a depth of 2 characters:
+
+```
+├── 2
+│   ├── 2
+│   └── b
+├── a
+│   ├── 1
+│   └── e
+└── e
+    ├── 1
+    └── 7
+```
+
+### Syntax
+* Sort using the MD5 hash of the file *name*: `ffiler -s3 tosort/*`
+* Sort using the MD5 hash of the file *content*: `ffiler -S3 tosort/*`
+
+## By Filename
+Similar to filing by hash, but don't bother to hash anything first (just take
+the first X characters of the filename).
+
+### Example
+An example tree (directories only) filing to a depth of 2 characters:
+
+```
+├── e
+│   ├── x
+│   └── l
+├── f
+│   ├── f
+│   └── i
+└── t
+    └── e
+```
+
+### Syntax
+* Sort to 1-level: `ffiler -f1 tosort/*`
+* Sort to 2-levels: `ffiler -f2 tosort/*`
+* Sort to 8-levels: `ffiler -f8 tosort/*`