Merge pull request #50 from rauls5382/graphtest

Update PPROF_TMPDIR help

internal/driver/cli.go

@@ -264,7 +264,7 @@ var usageMsgVars = "\n\n" +
 	"   -tools                 Search path for object tools\n" +
 	"\n" +
 	"  Environment Variables:\n" +
-	"   PPROF_TMPDIR       Location for temporary files (default $HOME/pprof)\n" +
+	"   PPROF_TMPDIR       Location for saved profiles (default $HOME/pprof)\n" +
 	"   PPROF_TOOLS        Search path for object-level tools\n" +
 	"   PPROF_BINARY_PATH  Search path for local binary files\n" +
 	"                      default: $HOME/pprof/binaries\n" +