- License: Reflect actual license of library in package.json based

not only on licenses of repository as a whole (i.e., "MIT") but
  individual component files; see `filesByLicense` in `licenseInfo.json`
  for a map of license to these files within the repo with their own
  licenses. See the new license badges on the README for a summary of
  the licenses including either bundled devDependencies or all
  `devDependencies` (we have no direct npm `dependencies` currently).
- Docs: Add license badges and `licenseInfo.json` (has a
  `filesByLicense` map of files to licenses (not yet used programmatically)
  and `bundledRootPackages` which is used by `license-badger` to know which
  dev. packages are being bundled (added by `npm run copy`) for determining
  summary of all licenses including bundled).
- npm: Update devDep.

badges/licenses-badge.svg

@@ -0,0 +1 @@
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