docs: replace "libraryAddress" with "target"

Author: PaulRBerg

README.md

@@ -8,35 +8,34 @@ just delegates all calls to the master contract address.
 
 `npm install @optionality.io/clone-factory`
 
-```javascript
+```solidity
 import "./Thing.sol";
 import "@optionality.io/clone-factory/contracts/CloneFactory.sol";
 import "zeppelin-solidity/contracts/ownership/Ownable.sol";
 
-
 contract ThingFactory is Ownable, CloneFactory {
 
-  address public libraryAddress;
+  address public target;
 
   event ThingCreated(address newThingAddress);
 
-  function ThingFactory(address _libraryAddress) public {
-    libraryAddress = _libraryAddress;
+  function ThingFactory(address _target) public {
+    target = _target;
   }
 
-  function setLibraryAddress(address _libraryAddress) public onlyOwner {
-    libraryAddress = _libraryAddress;
+  function setTarget(address _target) public onlyOwner {
+    target = _target;
   }
 
   function createThing(string _name, uint _value) public onlyOwner {
-    address clone = createClone(libraryAddress);
+    address clone = createClone(target);
     Thing(clone).init(_name, _value);
     ThingCreated(clone);
   }
 }
 ```
 
-This will inexpensively create a mimimalist forwarding shim contract that will delegate all calls to the contract libraryAddress
+This will inexpensively create a mimimalist forwarding shim contract that will delegate all calls to the `target` contract.
 
 ## WARNINGS
 - Be sure that the master contract is pre-initialized.  You can usually accomplish this in your constructor as the only time the master contract constructor is called is during the master contract's creation.  Clone contracts do not call the constructor, but are initialized with an inline initialization method (as demonstrated above).

test/ShortThingFactory.sol

@@ -6,27 +6,27 @@ import "../contracts/CloneFactory17.sol";
 
 contract ShortThingFactory is CloneFactory17 {
 
-  address public libraryAddress;
+  address public target;
 
-  event ThingCreated(address newThingAddress, address libraryAddress);
+  event ThingCreated(address newThingAddress, address target);
 
-  constructor(address _libraryAddress) public {
-    libraryAddress = _libraryAddress;
+  constructor(address _target) public {
+    target = _target;
   }
 
   function onlyCreate() public {
-    createClone(libraryAddress);
+    createClone(target);
   }
 
   function createThing(string _name, uint _value) public {
-    address clone = createClone(libraryAddress);
+    address clone = createClone(target);
     Thing(clone).init(_name, _value);
-    emit ThingCreated(clone, libraryAddress);
+    emit ThingCreated(clone, target);
   }
 
 
   function isThing(address thing) public view returns (bool) {
-    return isClone(libraryAddress, thing);
+    return isClone(target, thing);
   }
 
 }

test/ThingFactory.sol

@@ -6,26 +6,26 @@ import "../contracts/CloneFactory.sol";
 
 contract ThingFactory is CloneFactory {
 
-  address public libraryAddress;
+  address public target;
 
-  event ThingCreated(address newThingAddress, address libraryAddress);
+  event ThingCreated(address newThingAddress, address target);
 
-  constructor (address _libraryAddress) public {
-    libraryAddress = _libraryAddress;
+  constructor (address _target) public {
+    target = _target;
   }
 
   function onlyCreate() public {
-    createClone(libraryAddress);
+    createClone(target);
   }
 
   function createThing(string _name, uint _value) public {
-    address clone = createClone(libraryAddress);
+    address clone = createClone(target);
     Thing(clone).init(_name, _value);
-    emit ThingCreated(clone, libraryAddress);
+    emit ThingCreated(clone, target);
   }
 
   function isThing(address thing) public view returns (bool) {
-    return isClone(libraryAddress, thing);
+    return isClone(target, thing);
   }
 
   function incrementThings(address[] things) public returns (bool) {