Update README.md

README.md

@@ -5,7 +5,7 @@ single-file public domain libraries for C/C++
 
 library | description
 --------- | ---------
-**stb_image.c**       | image loading/decoding from disk/memory: JPG, PNG, TGA, BMP, PSD,GIF,HDR,PIC
+**stb_image.c**       | image loading/decoding from disk/memory: JPG, PNG, TGA, BMP, PSD, GIF, HDR, PIC
 **stb_vorbis.c**      | decode ogg vorbis files from memory to float/16-bit signed output
 **stb_truetype.h**    | parse, decode, and rasterize characters from truetype fonts
 **stb_image_write.h** | image writing to disk
@@ -13,3 +13,37 @@ library | description
 **stb_c_lexer.h**     | simplify writing parsers for C-like languages
 **stb_perlin.h**      | revised Perlin noise (3D input, 1D output)
 **stb_textedit.h**    | guts of a text editor for games etc implementing them from scratch
+
+FAQ
+---
+
+#### What's the license?
+
+These libraries are in the public domain (or the equivalent where that is not
+possible). You can do anything you want with them. You have no legal obligation
+to do anything else, although I appreciate attribution.
+
+#### If I wrap an stb library in a new library, does the new library have to be public domain?
+
+No.
+
+#### A lot of these libraries seem redundant to existing open source libraries. Are they better somehow?
+
+Generally they're only better in that they're easier to integrate,
+easier to use, and easier to release (single file; good API; no
+attribution requirement). They may be less featureful, slower,
+and/or use more memory. If you're already using an equivalent
+library, there's probably no good reason to switch.
+
+#### Will you add more image types to stb_image.c?
+
+If people submit them, I generally add them, but the goal of stb_image
+is less for applications like image viewer apps (which need to support
+every type of image under the sun) and more for things like games which
+can choose what images to use.
+
+#### Are there other single-file public-domain libraries out there?
+
+Yes. I'll put a list here when people remind me what they are.
+
+