Make base62 project independent, more concise macro definitions.

ush-obfuscate/src/env.rs

@@ -0,0 +1,9 @@
+const ENV_KEY_NAME: &str = "OBFUSCATION_KEY";
+const BACKUP_ENV_KEY: &str = "OBFUSCATION_KEY_DO_NOT_USE";
+
+pub fn get_encryption_key() -> String {
+    std::env::var(ENV_KEY_NAME).unwrap_or({
+        println!("Using default encryption key!");
+        BACKUP_ENV_KEY.to_owned()
+    })
+}