Get rid of tabs in README.md

Author: sideshowbarker

Makefile

@@ -3,6 +3,8 @@ PERL=perl
 PERLFLAGS=
 FMT=fmt
 FMTFLAGS=-80
+EXPAND=expand
+EXPANDFLAGS=
 
 all: README.md
 
@@ -12,4 +14,5 @@ README.md: index.html
 	    | $(PERL) $(PERLFLAGS) -pe 'undef $$/; s/(\s+\n)+/\n\n/g' \
 	    | $(PERL) $(PERLFLAGS) -pe 'undef $$/; s/(\n\n\n)+/\n/g' \
 	    | $(FMT) $(FMTFLAGS) \
-	    | $(PERL) $(PERLFLAGS) -pe 'undef $$/; s/ +(\[[0-9]+\]:)\n +/\n   $$1 /g' > $@
+	    | $(PERL) $(PERLFLAGS) -pe 'undef $$/; s/ +(\[[0-9]+\]:)\n +/\n   $$1 /g' \
+	    | $(EXPAND) $(EXPANDFLAGS) > $@

README.md

@@ -15,7 +15,7 @@ You can use the `vnu.jar` validator as an executable for command-line validation
 of HTML documents by invoking it like this:
 
       java -jar vnu.jar [--html] [--entities] [--schema URL]
-	  [--format gnu|xml|json|text] [--verbose] [--version] FILES
+          [--format gnu|xml|json|text] [--verbose] [--version] FILES
 
 To validate one or more documents from the command line:
 
@@ -117,7 +117,7 @@ error-level ones by setting the value of the `nu.validator.client.level` system
 property to `error`, like this:
 
        java -Dnu.validator.client.level=error\
-	   -cp vnu.jar nu.validator.client.HttpClient FILE.html...
+           -cp vnu.jar nu.validator.client.HttpClient FILE.html...
 
 Most of the properties listed below map to the validator.nu common input
 parameters documented at