Implement configuration file parsing

include/config.h

@@ -0,0 +1,14 @@
+#ifndef _CONFIG_H
+#define _CONFIG_H
+
+typedef struct Config Config;
+extern Config config;
+
+struct Config {
+	const char *terminal;
+	const char *font;
+};
+
+void load_configuration(const char *configfile);
+
+#endif