update README, fix gemini errors

Signed-off-by: kim (grufwub) <grufwub@gmail.com>

README.md

@@ -13,10 +13,12 @@ appreciated 💕 https://liberapay.com/grufwub/
 
 - Built with security, concurrency and efficiency in mind
 
-- ZERO external dependencies
+- ZERO external dependencies (aside from my own small libraries)
 
-- LRU file caching with user-controlled cache size, max cached file size
-  and cache refresh frequency
+- LRU file caching with user-controlled cache size, max cached file size,
+  refresh frequency and max file age before being marked as stale
+
+- Buffer pools to minimize allocations
 
 - CGI/1.1 support
 

gemini/error.go

@@ -9,8 +9,8 @@ import (
 // Gemini specific base errors
 var (
 	invalidTLSConfigErr = errors.NewBaseError(invalidTLSConfigErrStr)
-	invalidProtocolErr  = errors.NewBaseError("")
-	invalidHostPortErr  = errors.NewBaseError("")
+	invalidProtocolErr  = errors.NewBaseError(inavlidProtocolErrStr)
+	invalidHostPortErr  = errors.NewBaseError(invalidHostPortErrStr)
 )
 
 // generateErrorResponse takes an error code and generates an error response byte slice