Correct the formatting of HACKING.md; add top-level files reference.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

HACKING.md

@@ -22,35 +22,33 @@ does not use threads, so the code flow is generally fairly simple.
 
 Here's a list of parts, with notes:
 
-ccan/ - useful routines from http://ccodearchive.net
+* ccan - useful routines from http://ccodearchive.net
   - Use make update-ccan to update it.
   - Use make update-ccan CCAN_NEW="mod1 mod2..." to add modules
 
-bitcoin/ - bitcoin script, signature and transaction routines.
+* bitcoin/ - bitcoin script, signature and transaction routines.
   - Not a complete set, but enough for our purposes.
 
-secp256k1/ - a copy of libsecp256k1.
+* secp256k1/ - a copy of libsecp256k1.
   - TODO: Replace this will the library once 1.0 is well distributed.
 
-test/ - A few standalone test programs
-	- test_onion: C code to generate and decode the routing onion
-	  (Obsolete; will replace with Sphynx!)
+* test/ - A few standalone test programs
+  - test_onion: C code to generate and decode the routing onion (Obsolete; will replace with Sphynx!)
   - test_state_coverage: routine to test state machine.
 
-daemon/ - The start of a lightningd daemon and lightning-cli
-
-	Networking and comms:
+* daemon/ - The start of a lightningd daemon and lightning-cli
+  - Networking and comms:
     - cryptopkt: cryptographic handshake and comms routines.
     - dns: async dns lookup
     - netaddr: wrapper type for network addresses.
 
-	JSON and command support:
+  - JSON and command support:
     - jsmn/ : a "minimalistic JSON parser" from http://zserge.com/jsmn.html
     - json: simple wrappers around jsmn for parsing and creating JSON
     - jsonrpc: routines for handing JSON commands (async).
     - lightning-cli: simple lightning command line client.
 
-	Misc:
+  - Misc:
     - configdir: support for ~/.lightning/config
     - controlled_time: support for dev-mocktime to alter time.
     - log: logging routines
@@ -58,17 +56,30 @@ daemon/ - The start of a lightningd daemon and lightning-cli
     - secrets: routines for using secret keys.
     - timeout: timer support.
 
-	Dealing with bitcoin events:
+  - Dealing with bitcoin events:
     - bitcoind: communication with bitcoind to monitor/send txs.
     - watch: wrapper for watching specific events.
 
-	Core code:
+  - Core code:
     - lightningd: main routine for lightning
     - packets: per-peer packet creation and acceptance routines 
     - peer: peer routines and data structure.
 
-Feel free to ask questions on the lightning-dev mailing list, or on
-#lightning-dev on IRC, or email me at rusty@rustcorp.com.au.
-
-Cheers!
+* Top level:
+  - funding: tracking of state of a channel, including feesplit logic.
+  - state: core state machine for the lightning protocol.
+  - Helpers for lightning-specific transactions
+    - close_tx: mutual close transaction
+    - commit_tx: commit transaction (optionally with htlcs)
+    - permute_tx: code to permute transactions outputs for anon
+  - Various helper routines:
+    - find_p2sh_out: helper to find a given tx output.
+    - gen_state_names: source generator for enum names.
+    - opt_bits: commandline parser for "bits" (100 satoshi)
+    - protobuf_convert: conversion to/from protobufs.
+    - version: helper to print the version and build features.
+
+Feel free to ask questions on the lightning-dev mailing list, or on #lightning-dev on IRC, or email me at rusty@rustcorp.com.au.
+
+Cheers!<br>
 Rusty.