Add rudimentary docs for node, chain and wallet (#726)

docs/applications/chain.md

@@ -1,8 +1,15 @@
 ---
-id: sync-chain
-title: Syncing block headers with Bitcoin-S
+title: Blockchain Verification
+id: chain
 ---
 
+Bitcoin-S comes bundled with a rudimentary blockchain verification
+module. This module is currently only released as a library, and not as a binary.
+This is because it (nor the documentation) is not deemed production
+ready. Use at your own risk, and without too much money depending on it.
+
+## Syncing and verifying block headers
+
 Using the `chain` module of Bitcoin-S it's possible to
 sync and verify block headers from the Bitcoin blockchain. In this document
 we demonstrate how to do this, while persisting it to disk. We should be

docs/applications/node.md

@@ -0,0 +1,13 @@
+---
+title: Light client
+id: node
+---
+
+Bitcoin-S comes bundled with a light client Bitcoin node. this client
+is capable of doing verification of some parts of the blockchain,
+and can act as a starting point for building Bitcoin applications
+that need to connect to the P2P network.
+
+This node is currently only released as a library, and not as a binary.
+This is because it (nor the documentation) is not deemed production
+ready. Use at your own risk, and without too much money depending on it.

docs/applications/wallet.md

@@ -1,8 +1,19 @@
 ---
-id: create-wallet
-title: Creating a Bitcoin-S wallet
+title: Wallet
+id: wallet
 ---
 
+Bitcoin-S comes bundled with a rudimentary Bitcoin wallet. This wallet
+is capable of managing private keys, generating addresses, constructing
+and signing transactions, among other things. It is BIP32/BIP44/BIP49/BIP84
+compatible.
+
+This wallet is currently only released as a library, and not as a binary.
+This is because it (nor the documentation) is not deemed production
+ready. Use at your own risk, and without too much money depending on it.
+
+## Creating a wallet
+
 This guide shows how to create a Bitcoin-S wallet and then
 peer it with a `bitcoind` instance that relays
 information about what is happening on the blockchain

website/sidebars.json

@@ -12,10 +12,13 @@
       "rpc/rpc-eclair",
       "rpc/rpc-bitcoind"
     ],
-    "Chain": ["chain/sync-chain"],
-    "Wallet": ["wallet/create-wallet"],
+    "Applications": [
+      "applications/node",
+      "applications/wallet",
+      "applications/chain",
+      "applications/configuration"
+    ],
     "Contributing": ["contributing", "contributing-website"],
-    "Applications": ["applications/configuration"],
     "Security": ["security"]
   }
 }