fix-build-structure (#150)

* fix-build-structure

Author: antmendoza

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@severlessworkflow/sdk-typescript",
-  "version": "3.0.0",
+  "version": "3.0.1",
   "schemaVersion": "0.8",
   "description": "Typescript SDK for Serverless Workflow Specification",
   "main": "umd/index.umd.min.js",
@@ -25,7 +25,7 @@
     "pretest": "npx rimraf out-tsc",
     "test": "npx tsc --project ./tests/tsconfig.json && npx jasmine --config=./tests/support/jasmine.json",
     "prebuild": "npx rimraf dist",
-    "build": "npx rollup -c rollup.config.ts",
+    "build": "npx rollup -c rollup.config.ts && npx shx mv ./dist/src/lib ./dist/lib && npx rimraf ./dist/src",
     "postbuild": "npx shx cp ./package.json ./README.md ./LICENSE ./dist/",
     "verify-publish-directory": "node -e 'if (!process.cwd().endsWith(\"dist\")) { console.error(\"Packaging/Publishing should be done from ./dist/\"); process.exitCode = 1; } process.exit();'",
     "prepack": "npm run verify-publish-directory",