Docs

[KinanBab]

Write docs from the perspective of creating a hello-world demo:

1. Cargo.toml file importing Sesame etc
2. build application and run in debug
3. Scrutinizer:
   3a. install scrutinizer
   3b. build.rs with lints
   3c. scrutinizer config file
   3d. interpret scrutinizer output, esp. with closure
4. Sandboxes:
   4a. reorganize crates
   4b. build.rs + Cargo.toml changes
5. Sigin CRs via scripts, configure github identities?

[KinanBab]

Changes required to simplify this:

1. Add logging/printing to scrutinizer to indicate what region is currently analyzed for knowing what crashed
2. Install scrutinizer as part of build.rs