added bound validator docs

Author: web3rover

oracle/BoundValidator.md

@@ -0,0 +1,76 @@
+# Bound Validator
+
+## Introduction
+
+This contracts is used to validate prices from two different sources. We need to set upper and lower bound ratios config for each vToken in this contract.
+
+## Solidity API
+
+
+### initialize
+
+```solidity
+function initialize() public
+```
+
+Initializes the owner of the contract
+
+### setValidateConfigs
+
+```solidity
+function setValidateConfigs(struct ValidateConfig[] configs) external virtual
+```
+
+Add multiple validation configs at the same time
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| configs | struct ValidateConfig[] | config array |
+
+### setValidateConfig
+
+```solidity
+function setValidateConfig(struct ValidateConfig config) public virtual
+```
+
+Add single validation config
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| config | struct ValidateConfig | config struct |
+
+### validatePriceWithAnchorPrice
+
+```solidity
+function validatePriceWithAnchorPrice(address vToken, uint256 reporterPrice, uint256 anchorPrice) public view virtual returns (bool)
+```
+
+Test reported asset price against anchor price
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| vToken | address | vToken address |
+| reporterPrice | uint256 | the price to be tested |
+| anchorPrice | uint256 |  |
+
+### _isWithinAnchor
+
+```solidity
+function _isWithinAnchor(address asset, uint256 reporterPrice, uint256 anchorPrice) internal view returns (bool)
+```
+
+Test whether the reported price is within the predefined bounds
+
+#### Parameters
+
+| Name | Type | Description |
+| ---- | ---- | ----------- |
+| asset | address | asset address |
+| reporterPrice | uint256 | the price to be tested |
+| anchorPrice | uint256 | anchor price as testing anchor |