fix(toPromise): include toPromise in build output (#2923)

- closes #2922

Author: kwonoj

package.json

@@ -1,5 +1,5 @@
 {
-  "name": "@reactivex/rxjs",
+  "name": "rxjs",
   "version": "5.5.0-beta.5",
   "description": "Reactive Extensions for modern JavaScript",
   "main": "index.js",
@@ -82,11 +82,11 @@
     "clean_dist_esm2015": "shx rm -rf ./dist/esm2015",
     "clean_dist_global": "shx rm -rf ./dist/global",
     "commit": "git-cz",
-    "compile_dist_cjs": "tsc   ./dist/src/Rx.ts ./dist/src/add/observable/of.ts -m commonjs --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --sourceMap --outDir ./dist/cjs   --target ES5    --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node -d --declarationDir ./dist/typings",
-    "compile_dist_esm5": "tsc  ./dist/src/Rx.ts ./dist/src/add/observable/of.ts -m es2015   --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --sourceMap --outDir ./dist/esm5  --target ES5    --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node",
-    "compile_dist_esm2015": "tsc ./dist/src/Rx.ts ./dist/src/add/observable/of.ts -m es2015   --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --sourceMap --outDir ./dist/esm2015 --target es2015 --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node",
-    "compile_dist_esm2015_for_docs": "tsc ./dist/src/Rx.ts ./dist/src/add/observable/of.ts ./dist/src/MiscJSDoc.ts -m es2015   --sourceMap --outDir ./dist/es6 --target es2015 -d --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node",
-    "compile_dist_esm5_for_rollup": "tsc  ./dist/src/Rx.ts ./dist/src/add/observable/of.ts -m es2015   --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --sourceMap --outDir ./dist/esm5_for_rollup  --target ES5    --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node --noEmitHelpers",
+    "compile_dist_cjs": "tsc   ./dist/src/Rx.ts ./dist/src/add/observable/of.ts ./dist/src/operator/toPromise.ts -m commonjs --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --sourceMap --outDir ./dist/cjs   --target ES5    --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node -d --declarationDir ./dist/typings",
+    "compile_dist_esm5": "tsc  ./dist/src/Rx.ts ./dist/src/add/observable/of.ts ./dist/src/operator/toPromise.ts -m es2015   --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --sourceMap --outDir ./dist/esm5  --target ES5    --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node",
+    "compile_dist_esm2015": "tsc ./dist/src/Rx.ts ./dist/src/add/observable/of.ts ./dist/src/operator/toPromise.ts -m es2015   --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --sourceMap --outDir ./dist/esm2015 --target es2015 --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node",
+    "compile_dist_esm2015_for_docs": "tsc ./dist/src/Rx.ts ./dist/src/add/observable/of.ts ./dist/src/MiscJSDoc.ts ./dist/src/operator/toPromise.ts -m es2015   --sourceMap --outDir ./dist/es6 --target es2015 -d --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node",
+    "compile_dist_esm5_for_rollup": "tsc  ./dist/src/Rx.ts ./dist/src/add/observable/of.ts ./dist/src/operator/toPromise.ts -m es2015   --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --sourceMap --outDir ./dist/esm5_for_rollup  --target ES5    --diagnostics --pretty --noImplicitAny --noImplicitReturns --noImplicitThis --suppressImplicitAnyIndexErrors --moduleResolution node --noEmitHelpers",
     "copy_sources": "mkdirp dist && shx cp -r ./src/ ./dist/src",
     "cover": "shx rm -rf dist/cjs && tsc dist/src/Rx.ts dist/src/add/observable/of.ts -m commonjs --lib es5,es2015.iterable,es2015.collection,es2015.promise,dom --outDir dist/cjs --sourceMap --target ES5 -d && nyc --reporter=lcov --reporter=html --exclude=spec/support/**/* --exclude=spec-js/**/* --exclude=node_modules mocha --opts spec/support/default.opts spec-js",
     "decision_tree_widget": "cd doc/decision-tree-widget && npm run build && cd ../..",