Copy license into all npm packages

Fixes parcel-bundler#415

Author: devongovett

scripts/build-npm.js

@@ -93,6 +93,7 @@ cliPkg.scripts = {
 
 fs.writeFileSync(`${dir}/cli/package.json`, JSON.stringify(cliPkg, false, 2) + '\n');
 fs.copyFileSync(`${dir}/README.md`, `${dir}/cli/README.md`);
+fs.copyFileSync(`${dir}/LICENSE`, `${dir}/cli/LICENSE`);
 
 function buildNode(triple, cpu, os, libc, t) {
   let name = `lightningcss.${t}.node`;
@@ -123,6 +124,7 @@ function buildNode(triple, cpu, os, libc, t) {
   fs.writeFileSync(`${dir}/npm/node-${t}/package.json`, JSON.stringify(pkg2, false, 2) + '\n');
   fs.copyFileSync(`${dir}/artifacts/bindings-${triple}/${name}`, `${dir}/npm/node-${t}/${name}`);
   fs.writeFileSync(`${dir}/npm/node-${t}/README.md`, `This is the ${triple} build of lightningcss. See https://github.com/parcel-bundler/lightningcss for details.`);
+  fs.copyFileSync(`${dir}/LICENSE`, `${dir}/npm/node-${t}/LICENSE`);
 }
 
 function buildCLI(triple, cpu, os, libc, t) {
@@ -154,4 +156,5 @@ function buildCLI(triple, cpu, os, libc, t) {
   fs.copyFileSync(`${dir}/artifacts/bindings-${triple}/${binary}`, `${dir}/npm/cli-${t}/${binary}`);
   fs.chmodSync(`${dir}/npm/cli-${t}/${binary}`, 0o755); // Ensure execute bit is set.
   fs.writeFileSync(`${dir}/npm/cli-${t}/README.md`, `This is the ${triple} build of lightningcss-cli. See https://github.com/parcel-bundler/lightningcss for details.`);
+  fs.copyFileSync(`${dir}/LICENSE`, `${dir}/npm/cli-${t}/LICENSE`);
 }