more README updates

README.md

@@ -1,10 +1,10 @@
-# picobin
+# tinyboot
 [![go.dev reference](https://pkg.go.dev/badge/github.com/soypat/tinyboot)](https://pkg.go.dev/github.com/soypat/tinyboot)
 [![Go Report Card](https://goreportcard.com/badge/github.com/soypat/tinyboot)](https://goreportcard.com/report/github.com/soypat/tinyboot)
-[![codecov](https://codecov.io/gh/soypat/picobin/branch/main/graph/badge.svg)](https://codecov.io/gh/soypat/picobin)
+[![codecov](https://codecov.io/gh/soypat/tinyboot/branch/main/graph/badge.svg)](https://codecov.io/gh/soypat/tinyboot)
 [![Go](https://github.com/soypat/tinyboot/actions/workflows/go.yml/badge.svg)](https://github.com/soypat/tinyboot/actions/workflows/go.yml)
 
-Tool for working with Raspberry Pi Pico's binaries.
+Tool for working with program builds and bootable partitions.
 
 How to install package with newer versions of Go (+1.16):
 ```sh
@@ -14,4 +14,13 @@ go mod download github.com/soypat/tinyboot@latest
 ## Package layout
 There are two main top level packages:
 - [`boot`](./boot): Concerns storage formats for booting a computer such as MBT, GPT and Raspberry Pi's picobin format.
+    - [`boot/mbt`](./boot/mbt): Master Boot Record Partition Table interfacing.
+    - [`boot/gpt`](./boot/gpt): GUID Partition Table interfacing.
+    - [`boot/picobin`](./boot/picobin): Raspberry Pi's bootable format for RP2350 and RP2040.
+
 - [`build`](./build): Concerns manipulation of computer program formats such as ELF and UF2.
+    - [`build/elfutil`](./build/elfutil): Manipulation of ELF files that works on top of `debug/elf` standard library package.
+    - [`build/uf2`](./build/uf2): Manipulation of Microsoft's UF2 format
+
+## picobin tool
+picobin tool permits users to inspect RP2350 and RP2040 binaries which are structured according to Raspberry Pi's picobin format.