Implemented headers and paragraphs

README.md

@@ -4,7 +4,8 @@ Markdown renderer.
 
 ## Features
 
-
+- Headers
+- Paragraphs
 
 ## Installation
 
@@ -15,16 +16,25 @@ go get git.akyoto.dev/go/markdown
 ## Usage
 
 ```go
+html := markdown.Render("# Header")
+fmt.Println(html)
 ```
 
 ## Tests
 
 ```
+PASS: TestEmpty
+PASS: TestParagraphs
+PASS: TestHeader
+PASS: TestCombined
+coverage: 100.0% of statements
 ```
 
 ## Benchmarks
 
-
+```
+BenchmarkSmall-12        2187232               544.9 ns/op           296 B/op          9 allocs/op
+```
 
 ## License