Remove test coverage report and update README.md

Test coverage is easily obtained by:

	go tool cover -func=count.out
	go test -covermode=count -coverprofile=count.out

Currently:

github.com/kortschak/utter/common.go:64:	init			81.8%
github.com/kortschak/utter/common.go:105:	unsafeReflectValue	80.0%
github.com/kortschak/utter/common.go:164:	printBool		100.0%
github.com/kortschak/utter/common.go:173:	printInt		100.0%
github.com/kortschak/utter/common.go:178:	printUint		100.0%
github.com/kortschak/utter/common.go:184:	printFloat		100.0%
github.com/kortschak/utter/common.go:190:	printComplex		100.0%
github.com/kortschak/utter/common.go:203:	hexDump			85.7%
github.com/kortschak/utter/common.go:241:	printHexPtr		100.0%
github.com/kortschak/utter/common.go:281:	Len			100.0%
github.com/kortschak/utter/common.go:287:	Swap			100.0%
github.com/kortschak/utter/common.go:294:	valueSortLess		100.0%
github.com/kortschak/utter/common.go:325:	Less			100.0%
github.com/kortschak/utter/common.go:332:	sortValues		100.0%
github.com/kortschak/utter/config.go:66:	Fdump			100.0%
github.com/kortschak/utter/config.go:88:	Dump			100.0%
github.com/kortschak/utter/config.go:94:	Sdump			100.0%
github.com/kortschak/utter/config.go:106:	NewDefaultConfig	100.0%
github.com/kortschak/utter/dump.go:62:		indent			100.0%
github.com/kortschak/utter/dump.go:73:		unpackValue		100.0%
github.com/kortschak/utter/dump.go:81:		dumpPtr			100.0%
github.com/kortschak/utter/dump.go:148:		dumpSlice		73.5%
github.com/kortschak/utter/dump.go:228:		dump			100.0%
github.com/kortschak/utter/dump.go:382:		fdump			100.0%
github.com/kortschak/utter/dump.go:400:		Fdump			100.0%
github.com/kortschak/utter/dump.go:406:		Sdump			100.0%
github.com/kortschak/utter/dump.go:430:		Dump			100.0%
total:						(statements)		93.9%

README.md

@@ -12,7 +12,7 @@ pseudo-code representations of pointer-based structures will require subsequent
 processing.
 
 utter implements a deep pretty printer for Go data structures to aid in
-snapshot creation.  A comprehensive suite of tests with 100% test coverage is provided
+snapshot creation.  A comprehensive suite of tests with near 100% test coverage is provided
 to ensure proper functionality.  utter is licensed under the liberal ISC license,
 so it may be used in open source or commercial projects.