chore(package): update rollup-plugin-typescript2 to version 0.26.0

Closes #11

Author: greenkeeper[bot]

package.json

@@ -77,7 +77,7 @@
     "rollup-plugin-json": "^4.0.0",
     "rollup-plugin-node-resolve": "^5.2.0",
     "rollup-plugin-sourcemaps": "^0.4.2",
-    "rollup-plugin-typescript2": "^0.24.3",
+    "rollup-plugin-typescript2": "^0.26.0",
     "shelljs": "^0.8.3",
     "ts-jest": "^24.1.0",
     "ts-node": "^8.4.1",