Print usage on malformed command line arguments

1 files changed, 1 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index af7c62b..d3479a4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,6 +5,7 @@ edition = "2018"
 
 [dependencies]
 derive_builder = "0.10.0"
+exitcode = "1.1.2"
 getopts = "0.2.21"
 pdf_forms = "0.3.4"
 serde = { version = "1.0.125", features = ["derive"]  }