Removed deprecated sections

README

@@ -32,24 +32,11 @@ It can use SHA-1, SHA-256, SHA-384, or SHA-512, which generate
 respectively, hashes of 160, 256, 384, or 512 bits. sha can be
 used in scripts to do, for example, file integrity checking.
 
-For more information on SHA (the algorithms), visit:
-http://csrc.nist.gov/encryption/tkhash.html
-
-To build sha, see INSTALL.
-
 Using sha is simple. Just pass the names of one or more files on
 the command line. By default, sha will use SHA-1 unless passed
 one of the following flags: -2 for SHA-256, -3 for SHA-384 or
 -5 for SHA-512. Type "sha -h" for help.
 
-If no filenames are given, sha will hash stdin.
-
-If the environment variable SHA_DEFAULT is set, the default hashing
-algorithm can be changed. Only the first character of the value of
-SHA_DEFAULT is significant. It can be '1' for SHA-1, '2' for SHA-256,
-'3' for SHA-384, or '5' for SHA-512. With any other value, sha will
-use SHA-1 by default. Again, "sha -h" will display the default.
-
 You may want to perform a sanity check on sha before relying on it.  A
 program called "shatest" is built along with sha (but not installed).
 If you run shatest, it will display the results of running the various
@@ -62,7 +49,4 @@ They are fast and relatively portable. Please see the top of each
 source file for copyright and warranty information. See README.SHA
 for technical notes.
 
-The latest version of sha can always be found at:
-http://philosophysw.com/
-
 - Allan Saddi <allan@saddi.com>