Update README. Fix typos.

NVIDIA_Texture_Tools_README.txt

@@ -82,8 +82,8 @@ The usage of the commandline tool is the following:
 
 $ nvcompress [options] infile [outfile]
 
-where 'infile' is and TGA, PNG or JPG file, 'outfile' is a DDS file and 
+where 'infile' is and TGA, PNG, PSD, DDS or JPG file, 'outfile' is a DDS file
-'options' is one or more of the following:
+and 'options' is one or more of the following:
 
 Input options:
   -color   	The input image is a color map (default).
@@ -131,7 +131,7 @@ Yes.
 
 - Do the NVIDIA Texture Tools work on Vista?
 Yes, but note that CUDA is not supported on Vista yet, so the tool is not hardware 
-accellerated.
+accelerated.
 
 
 - Is CUDA required?

NVIDIA_Texture_Tools_TODO.txt

@@ -1,8 +1,8 @@
 
 Short term:
  - Improve quality of fast compressors.
- - More accellerated compressors.
+ - More accelerated compressors.
- - Accellerate mipmap generation.
+ - Accelerate mipmap generation.
  - Generic RGB pixel format conversion.
  - Do not assume that alpha is used for transparency.