templates: nodemcu-arduino: better symbol names.

o Adding some documentation to the readme. Adding a small flow chart illustrating how the tool work with a schematic, netlist and template to generate a header file.

1 files changed, 1 insertions, 1 deletions

diff --git a/cli/generate-header.cpp b/cli/generate-header.cpp
index 3ff39f6..bc02277 100644
--- a/cli/generate-header.cpp
+++ b/cli/generate-header.cpp
@@ -35,7 +35,7 @@ char *program;
 __attribute__((noreturn))
 void usage(const char *reason = nullptr) {
     if (reason) {
-        fprintf(stderr, "%s\n", reason);
+        fprintf(stderr, "error: %s\n", reason);
     }
     fprintf(stderr, "usage: %s -n <net file> -r <ref> -t <template> [-l <template lib dir>] [-o <out file>]\n",
             program);