added Lbryapi export for getExchangeRates method

.lintstagedrc

@@ -1,6 +1,6 @@
 {
   "linters": {
-    "src/**/*.{js}": [
+    "src/**/*.js": [
       "prettier --write",
       "eslint --fix",
       "git add"

src/index.js

@@ -1,8 +1,9 @@
 // common
 import Lbry from 'lbry';
+import Lbryapi from 'lbryapi';
 import Lbryuri from 'lbryuri';
 
-export { Lbry, Lbryuri };
+export { Lbry, Lbryapi, Lbryuri };
 
 // actions
 export { doOpenModal, doCloseModal, doShowSnackBar } from 'redux/actions/app';