Update README.md

Author: v1rtl

README.md

@@ -1,6 +1,6 @@
 <div align="center">
   <img src="https://raw.githubusercontent.com/deno-libs/tinyhttp/master/logo.svg"  />
-  <h1 align="center">tinyhttp</h1>
+  <h1 align="center">DEPRECATED! Use <code>npm:@tinyhttp/app</code> directly</h1>
 
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