minor updates (better wording, assets be local)

README.md

@@ -3,7 +3,7 @@
 - Scripts must use `set -euo pipefail`
 - All work should be done in a temporary directory (`mktemp -d`)
 - Currently, only amd64 will be supported
-- Must exit if the program is already up-to-date
+- Must exit without rebuilding/repackaging if the program is already up-to-date
 
 ## Building
 
@@ -23,6 +23,9 @@
   - They should be placed in `$PACKAGES_DIR/[package name]/`
 - Packages should be built on the distro they're for, unless there's a specific reason not to.
 - There should be a branch named after a distro for each distro it's for, e.g. `fedora` for Fedora.
+- Must grab all assets locally, must not *require* getting packages from a URL, even if it's available publicly and easily.
+  - Extra optional functionality like that is okay though.
+  - i.e. can't grab from [here](https://askiiart.net/repos/archives/polycat/), must instead grab from `$COMPILED_DIR/polycat/`
 
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