Add setup instructions to the README.md

README.md

@@ -1,5 +1,17 @@
+Bitcoin Core + addrindex
+========================
+
+This fork is Bitcoin Core with an additional feature which allows querying arbitrary addresses.
+
+To use add the following to your `bitcoin.conf`:
+
+    txindex=1
+    addrindex=1
+
+First run will require a full reindex of the blockchain. After that, the `searchrawtransactions` will be available.
+
 Bitcoin Core integration/staging tree
-=====================================
+-------------------------------------
 
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