Tweak headings in README

Author: codedread

README.md

@@ -22,9 +22,7 @@ or
 $ yarn add @codedread/bitjs
 ```
 
-## Example Usage
-
-### bitjs.archive
+## bitjs.archive
 
 This package includes objects for unarchiving binary data in popular archive formats (zip, rar, tar) providing unzip, unrar and untar capabilities via JavaScript in the browser. A prototype version of a compressor that creates Zip files is also present. The decompression/compression actually happens inside a Web Worker.
 
@@ -96,7 +94,7 @@ const zippedArrayBuffer = await zipper.start(
   true /* isLastFile */);
 ```
 
-### bitjs.codecs
+## bitjs.codecs
 
 This package includes code for dealing with media files (audio/video). It is useful for deriving
 ISO RFC6381 MIME type strings, including the codec information. Currently supports a limited subset
@@ -119,7 +117,7 @@ exec(cmd, (error, stdout) => {
   const contentType = getFullMIMEString(info);
 ```
 
-### bitjs.file
+## bitjs.file
 
 This package includes code for dealing with files.  It includes a sniffer which detects the type of file, given an ArrayBuffer.
 
@@ -128,7 +126,7 @@ import { findMimeType } from './bitjs/file/sniffer.js';
 const mimeType = findMimeType(someArrayBuffer);
 ```
 
-### bitjs.image
+## bitjs.image
 
 This package includes code for dealing with binary images.  It includes a module for converting WebP images into alternative raster graphics formats (PNG/JPG).
 
@@ -143,7 +141,7 @@ convertWebPtoPNG(webpBuffer).then(pngBuf => {
 });
 ```
 
-### bitjs.io
+## bitjs.io
 
 This package includes stream objects for reading and writing binary data at the bit and byte level: BitStream, ByteStream.
 
@@ -154,7 +152,7 @@ const crc = bstream.readBits(12); // read in 12 bits as CRC, advancing the point
 const flagbits = bstream.peekBits(6); // look ahead at next 6 bits, but do not advance the pointer
 ```
 
-## Other Tests
+# Other Tests
 
 Those that haven't been ported to mocha/chai/nodejs.