Move docs to their own folder, clean up

README.md

@@ -3,7 +3,7 @@
 A software package to record audio and related metadata from a configuration
 of hydrophones.
 
-For setup instructions, see `setup.md`.
+For setup instructions, see `docs/setup.md`.
 
 ## Overview
 

todo.md

@@ -1,23 +0,0 @@
-# To do list
-
-- [ ] Configurable, documented setup process for the Raspberry Pi
-  - [ ] Setup script
-    - [ ] Copy executables & scripts
-    - [ ] Required packages to install
-    - [ ] System configurations
-  - [ ] Configurable values
-  - [ ] Test
-- [ ] Output formats & location for output data
-  - [ ] Automatic SSD mounting
-- [ ] Audio recording
-  - [ ] Logging
-  - [ ] Test
-- [ ] GPS recording
-  - [ ] Logging
-  - [ ] Test
-- [ ] Depth recording
-  - [ ] Double check formulas to calculate depth & pressure from voltage
-  - [ ] Logging
-  - [ ] Test
-- [ ] Test autonomous recording as a whole
-