Add rust and ruby stuff to zshrc, add OS test

config/zshrc

@@ -108,4 +108,30 @@ alias gdiffc="git diff --cached"
 alias gitc="git commit"
 
 export LC_CTYPE="en_US.UTF-8"
-source ~/.cargo/env
+# Homebrew / MacOS Library Path
+export LIBRARY_PATH="$LIBRARY_PATH:$(brew --prefix)/lib"
+
+case ($uname -s) in
+  Linux)
+    export OS="linux"
+  ;;
+  Darwin)
+    export OS="darwin"
+  ;;
+  *)
+    echo "Can't detect operating system from shell."
+  ;;
+esac
+
+
+# Rust dev
+if [ -d ~/.cargo/ ]
+then
+  source ~/.cargo/env
+fi
+
+# Ruby dev
+eval "$(rbenv init - zsh)"
+
+# Liz stuff lol
+# curl -fsSL https://icanhazdadjoke.com | lolcat