added WVCF

contracts/modules/Checkpoint/WeightedVoteCheckpointFactory.sol

@@ -0,0 +1,98 @@
+pragma solidity ^0.4.24;
+
+import "./WeightedVoteCheckpoint.sol";
+import "../ModuleFactory.sol";
+
+/**
+ * @title Factory for deploying WeightedVoteCheckpoint module
+ */
+contract WeightedVoteCheckpointFactory is ModuleFactory {
+
+    /**
+     * @notice Constructor
+     * @param _polyAddress Address of the polytoken
+     * @param _setupCost Setup cost of the module
+     * @param _usageCost Usage cost of the module
+     * @param _subscriptionCost Subscription cost of the module
+     */
+    constructor (address _polyAddress, uint256 _setupCost, uint256 _usageCost, uint256 _subscriptionCost) public
+    ModuleFactory(_polyAddress, _setupCost, _usageCost, _subscriptionCost)
+    {
+        version = "1.0.0";
+        name = "WeightedVoteCheckpoint";
+        title = "Weighted Vote Checkpoint";
+        description = "Weighted votes based on token amount";
+        compatibleSTVersionRange["lowerBound"] = VersionUtils.pack(uint8(0), uint8(0), uint8(0));
+        compatibleSTVersionRange["upperBound"] = VersionUtils.pack(uint8(0), uint8(0), uint8(0));
+
+    }
+
+    /**
+     * @notice used to launch the Module with the help of factory
+     * @return address Contract address of the Module
+     */
+    function deploy(bytes /* _data */) external returns(address) {
+        if (setupCost > 0)
+            require(polyToken.transferFrom(msg.sender, owner, setupCost), "Failed transferFrom because of sufficent Allowance is not provided");
+        return address(new WeightedVoteCheckpoint(msg.sender, address(polyToken)));
+    }
+
+     /**
+     * @notice Type of the Module factory
+     */
+    function getTypes() external view returns(uint8[]) {
+        uint8[] memory res = new uint8[](1);
+        res[0] = 4;
+        return res;
+    }
+
+    /**
+     * @notice Get the name of the Module
+     */
+    function getName() public view returns(bytes32) {
+        return name;
+    }
+
+    /**
+     * @notice Get the description of the Module
+     */
+    function getDescription() external view returns(string) {
+        return description;
+    }
+
+    /**
+     * @notice Get the title of the Module
+     */
+    function getTitle() external view returns(string) {
+        return title;
+    }
+
+    /**
+     * @notice Get the version of the Module
+     */
+    function getVersion() external view returns(string) {
+        return version;
+    }
+
+    /**
+     * @notice Get the setup cost of the module
+     */
+    function getSetupCost() external view returns (uint256) {
+        return setupCost;
+    }
+
+    /**
+     * @notice Get the Instructions that helped to used the module
+     */
+    function getInstructions() external view returns(string) {
+        return "Create a vote which allows token holders to vote on an issue with a weight proportional to their balances at the point the vote is created.";
+    }
+
+    /**
+     * @notice Get the tags related to the module factory
+     */
+    function getTags() external view returns(bytes32[]) {
+        bytes32[] memory availableTags = new bytes32[](0);
+        return availableTags;
+    }
+}