make list render nicely

Readme.md

@@ -49,12 +49,12 @@ This decoder is pretty much feature complete. If there are any wishes for new AP
 ## Roadmap
 
 1. More Performance optimizations
-  * sequence_decoding and reverse_bitreader::get_bits. Those account for about 50% of the whole time used in decoding
-  * Matching suffixes. This accounts for >60% of the whole time used in encoding
+    1. sequence_decoding and reverse_bitreader::get_bits. Those account for about 50% of the whole time used in decoding
+    2. Matching suffixes. This accounts for >60% of the whole time used in encoding
 2. Implement encoder features
-  * More levels
-  * Dictionaries
-  * Checksums
+    1. More levels
+    2. Dictionaries
+    3. Checksums
 
 ## Testing