added root readme file

Author: kostysh

README.md

@@ -0,0 +1,39 @@
+# ORGiD DID Resolver mono repository
+
+## Documentation
+
+[https://windingtree.github.io/org.id-sdk/](https://windingtree.github.io/org.id-sdk/)
+
+## Setup
+
+When you adding dependencies to your packages it is recommended to run `bootstrap` command from the root of the repository. This command will update packages dependencies.
+
+```bash
+yarn install
+yarn bootstrap
+yarn build
+```
+
+## Testing and linting
+
+```bash
+yarn lint
+yarn test
+```
+
+## Maintenance
+
+New repository version setup (according to the SDK stake should be chosen custom `prerelease` or `major` release version type from the `lerna` CLI dialog):
+
+```bash
+npx lerna version prerelease --yes --sign-git-commit --sign-git-tag
+# npx lerna version major --yes --sign-git-commit --sign-git-tag
+# npx lerna version minor --yes --sign-git-commit --sign-git-tag
+# npx lerna version patch --yes --sign-git-commit --sign-git-tag
+```
+
+Publishing of the updated packages:
+
+```bash
+npx lerna publish from-git
+```