Update README.md

README.md

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 Simple, stateless Bitcoin blockchain explorer, via RPC. Built with Node.js, express, bootstrap-v4.
 
-This tool is intended to be a simple, stateless, self-hosted explorer for the Bitcoin blockchain, driven by RPC calls to your own bitcoind node. Because it is stateless, it is easy to run but lacks some (many?) of the features of other explorers.
+This tool is intended to be a simple, stateless, self-hosted explorer for the Bitcoin blockchain, driven by RPC calls to your own bitcoind node. This tool is easy to run but lacks features compared to full-fledged (stateful) explorers.
+
+I built this tool because I wanted to use it myself. Whatever reasons one might have for running a full node (trustlessness, technical curiosity, etc) it's helpful to appreciate the "fullness" of a node.
 
 # Features
 
@@ -11,6 +13,7 @@ This tool is intended to be a simple, stateless, self-hosted explorer for the Bi
 * View block details
 * View transaction details, with navigation backward via spent outputs
 * View raw JSON output used to generate most pages
+* Mempool/unconfirmed transaction counts by fee (sat/B)
 
 # Getting started