Add Some Details of Readme (#47)

* add readme for tests

* add docs in README

README.md

@@ -2,4 +2,6 @@
 
 Metis is inspired by the [OpenZeppelin-Contracts](https://github.com/OpenZeppelin/openzeppelin-contracts) from the Ethereum ecosystem. Metis will develop the corresponding version of the ink! implementation for each newly generated ink! contract standard. Metis will be audited at the same time to ensure the security of the contract. Metis will also be able to be easily searched and downloaded just like Solidity development, and integrated into the developer's project as a Redspot plug-in.
 
+To use the Metis, can see the [documentation](https://patractlabs.github.io/metis/overview.html).
+
 Proposal(M1)： https://polkadot.polkassembly.io/post/469

example/README.md

@@ -1 +1,51 @@
 # Metis Examples
+
+## Build
+
+At first we need build the contracts, note the examples may call each other, so it need build all contracts.
+
+```bash
+yarn .
+yarn build
+```
+
+If build is success, it will be artifacts in `example/artifacts`:
+
+```bash
+ ll ./artifacts  
+total 2.5M
+-rw-rw-r-- 1 user user  92K 7月  30 17:59 access_control.contract
+-rw-rw-r-- 1 user user  23K 7月  30 17:59 access_control.json
+
+...
+```
+
+## Run Tests
+
+To run tests, we need run a europa node for envirment:
+
+```bash
+europa --tmp --dev
+```
+
+To install the europa, can look at [europa](https://github.com/patractlabs/europa), Note the params must be `--tmp --dev`, some testcases will depend on the init Token for test accounts.
+
+As the testcases is large, so we need run tests for each contract:
+
+```bash
+npx redspot test ./tests/token/erc721.test.ts
+npx redspot test ./tests/token/erc721.burnable.test.ts
+npx redspot test ./tests/token/erc721.enumerable.test.ts
+npx redspot test ./tests/token/erc721.pausable.test.ts
+npx redspot test ./tests/token/erc721.urlstorage.test.ts
+npx redspot test ./tests/token/erc777.test.ts
+npx redspot test ./tests/token/erc1155.test.ts
+npx redspot test ./tests/governance/timelock_controller.test.ts
+npx redspot test ./tests/security/reentrancy-guard.test.ts
+npx redspot test ./tests/access-control/access-control.test.ts
+npx redspot test ./tests/access-control/ownable.test.ts
+npx redspot test ./tests/tools/erc165.test.ts
+npx redspot test ./tests/utils/escrow.test.ts
+```
+
+Use `yarn test` may error by too mush testcases.