Add 'license-generator' Rust project

Generated with:

    $ cargo new --bin license-generator

using

    $ rustc --version
    rustc 1.28.0 (9634041f0 2018-07-30)

This will be a FastCGI program to respond to a webhook from Paddle, and
respond with a generated license key file.

1 files changed, 3 insertions, 0 deletions

diff --git a/license-generator/src/main.rs b/license-generator/src/main.rs
new file mode 100644
index 0000000..e7a11a9
--- /dev/null
+++ b/license-generator/src/main.rs
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}