add contribution and logo rules

Signed-off-by: Ari Archer <ari@ari.lt>

CONTIRBUTING.md

@@ -0,0 +1,37 @@
+# Contribution guidelines
+
+This document defines the contribution guidelines of this project.
+
+## Adding a new logo
+
+If you want to add a new logo, please keep these things in mind:
+
+-   The file name is case-insensitive, but it should be lowercase
+-   The file name defines the distribution of the OS
+-   The file name is matched case-insensitively and with a starts with function, meaning a string like "arch" would match "Arch Linux"
+-   In the content of the logo only the `\033` escape (ANSI escape) is interpreted. Everything else is treated as literal
+-   The logo must be small
+
+## Changing/adding code
+
+-   Please stick to the formatting, use autoformatters (such as clang-format)
+-   Test your code
+-   Stick to the C99 standard
+-   Your code must also compile and fully work with the following flags set:
+
+```sh
+export STRIP=llvm-strip
+export STRIPFLAGS='--strip-debug --strip-sections --strip-unneeded -T --remove-section=.note.gnu.gold-version --remove-section=.note --strip-all --discard-locals --remove-section=.gnu.version --remove-section=.eh_frame --remove-section=.note.gnu.build-id --remove-section=.note.ABI-tag --strip-symbol=__gmon_start__ --strip-all-gnu --remove-section=.comment --remove-section=.eh_frame_ptr --discard-all'
+export CC=clang
+export CFLAGS='-Wpedantic -flto=full -fno-trapping-math -fstrict-aliasing -fno-math-errno -fno-stack-check -fno-strict-overflow -funroll-loops -fno-stack-protector -fvisibility-inlines-hidden -mfancy-math-387 -fomit-frame-pointer -fstrict-overflow -Wshadow -fuse-ld=lld -s -fno-exceptions -D_FORTIFY_SOURCE=0 -Wall -Wextra -fno-signed-zeros -fno-strict-aliasing -pedantic -Ofast -fvisibility=hidden -ffast-math -funsafe-math-optimizations -std=c99 -fno-asynchronous-unwind-tables -Werror -fdiscard-value-names -femit-all-decls -fmerge-all-constants -fno-use-cxa-atexit -fno-use-init-array -march=native -mtune=native -pedantic-errors'
+export LIBMPV=1
+```
+
+`NOQA` must not be set.
+
+```sh
+make purge
+make -j$(nproc --all)
+make strip
+./badapplefetch  # Should run the whole length of the song without crashing
+```

README.md

@@ -31,6 +31,12 @@ Should be enough for most people
 # Credits
 
 -   The video used for audio and video: <https://www.youtube.com/watch?v=FtutLA63Cp8>
+-   Logos mainly extracted from: <https://github.com/dylanaraps/pfetch>
+
+# Logo
+
+-   If you want a specific logo to show up, supply it in the command line of BadAppleFetch, such as `./badapplefetch ubuntu`
+-   If you want to add a logo, please see [CONTRIBUTING.md](/CONTRIBUTING.md)
 
 # Screenshot