Update readme

Author: joachimschmidt557

README.md

@@ -1,10 +1,16 @@
 # zig-string-searching
 
+![CI](https://github.com/ziglibs/zig-string-searching/workflows/CI/badge.svg)
+
 Implementation of some string-search algorithms in
-[zig](https://ziglang.org). 
+[zig](https://ziglang.org).
 
 ### Boyer-Moore string searching
 
-Ported from the implementation in the Go
-standard library:
+Ported from the implementation in the Go standard library:
 [strings/search.go](https://golang.org/src/strings/search.go).
+
+### Bitap algorithm
+
+Inspired by the code on the [Wikipedia
+article](https://en.wikipedia.org/wiki/Bitap_algorithm).