Update README.md

Author: kosmas-valianos

README.md

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 An ANSI C library to parse and create [PROXY protocol](https://www.haproxy.org/download/2.6/doc/proxy-protocol.txt) v1 and v2 headers with support for **all TLVs**
 * Full coverage of the latest 2.6 specification in parsing and creating all the v2 TLVs, including the custom ones from AWS and Azure.
 * Easy access of the values of the extracted v2 TLVs though the API. In case the v2 TLV values are US-ASCII string names, they are given as proper NULL terminated strings for easy usage.
+* Easy way through the API to request a specific alignment when creating v2 PROXY protocol headers.
 * Socket free logic. Does not hook, manipulate, assume any networking. It merely works on buffers.
 * Compilable with most compilers and usable at any platform as it is written in ANSI C.