[util] Add macros/functions to standardize argument validation (#817)

The new ZJS_VALIDATE_ARGS macro and related macros are to be used at
the top of any JerryScript C binding to verify the quantity and types
of arguments, and return standard exceptions if there is a problem.

The comments above the macros in zjs_util.h explain the details of how
they are to be used.

Signed-off-by: Geoff Gustafson <geoff@linux.intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/docs/fs.md b/docs/fs.md
index b6564a9..8c5f8ba 100644
--- a/docs/fs.md
+++ b/docs/fs.md
@@ -91,7 +91,7 @@ Remove a directory from the file system.
 `path` is the name of the directory.
 
 ### FS.writeSync
-`number writeSync(object fd, [String|Buffer] data, number offset, number length, optional number position);`
+`number writeSync(object fd, Buffer data, number offset, number length, optional number position);`
 
 Write bytes to an opened file.