base58check: add deprecation warnings

src/base58check.js

@@ -0,0 +1,18 @@
+var bs58check = require('bs58check')
+
+function decode() {
+  console.warn('bs58check will be removed in 2.0.0. require("bs58check") instead.');
+
+  bs58check.decode.apply(undefined, arguments)
+}
+
+function encode() {
+  console.warn('bs58check will be removed in 2.0.0. require("bs58check") instead.');
+
+  bs58check.encode.apply(undefined, arguments)
+}
+
+module.exports = {
+  decode: decode,
+  encode: encode
+}