colin helped with the example

[thor314]

No description provided.

[thor314]

status: this

---- colin::test_just_once stdout ----
input step_in, offset 1, len 1
input X, offset 2, len 1
thread 'colin::test_just_once' panicked at /home/thor/.cargo/git/checkouts/circom-witnesscalc-9ef9b74c47961d3e/2606b41/src/lib.rs:156:25:
index out of bounds: the len is 2 but the index is 2
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

[thor314]

got the test case passing for dummy inputs, will try to use the actual circuit tomorrow