New type cast method + NPM publishing capabilities (#17)

* Adding test to account for #13

* Fix for #13

Multiples of 32 bytes can now be safely sliced

* More tests for #13

* Bump version to v0.0.5

* Vanity updates

* Add type cast method to `bytes32`

* Update to the natSpec comment on top of both libraries 😄

Though I really like Nick Johnson's string library this has been built entirely by me (as opposed to what the NatSpec comment in the top said since the last commit 😄) I just copied the comment layout on top of his library and forgot to change the author 😂

* Adding Solidity highlight to gitattribute

🎉 😄

* Update package versions & prepare for NPM publish

* Create a NPM ignore file to keep `truffle.js` from being published

* Syntax & pragmas updates for v0.5.0

Author: GNSPS

.gitattribute

@@ -0,0 +1 @@
+*.sol linguist-language=Solidity

.npmignore

@@ -0,0 +1,12 @@
+# secret stuff
+# ================================================
+secrets.json
+
+# Generated stuff
+# ================================================
+build/*
+node_modules/*
+
+# Unneeded files for NPM deployment
+# ================================================
+truffle.js

README.md

@@ -2,7 +2,7 @@
 
 # Solidity Bytes Arrays Utils
 
-Bytes tightly packed arrays utility library for ethereum contracts written.
+Bytes tightly packed arrays utility library for ethereum contracts written in Solidity.
 
 The library lets you concatenate, slice and type cast bytes arrays both in memory and storage.
 

contracts/AssertBytes.sol

@@ -1,4 +1,12 @@
-pragma solidity ^0.4.19;
+/*
+ * @title Solidity Bytes Assertion Library 
+ * @author Gonçalo Sá <[email protected]>
+ *
+ * @dev A Solidity library built to complete assertions in Solidity unit tests.
+ *      This library is compliant with the test event convention that the Truffle suite uses.
+ */
+
+ pragma solidity ^0.4.21;
 
 
 library AssertBytes {
@@ -185,8 +193,8 @@ library AssertBytes {
 
     function _report(bool result, string message) internal {
         if (result)
-            TestEvent(true, "");
+            emit TestEvent(true, "");
         else
-            TestEvent(false, message);
+            emit TestEvent(false, message);
     }
 }

contracts/BytesLib.sol

@@ -1,3 +1,11 @@
+/*
+ * @title Solidity Bytes Arrays Utils
+ * @author Gonçalo Sá <[email protected]>
+ *
+ * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity.
+ *      The library lets you concatenate, slice and type cast bytes arrays both in memory and storage.
+ */
+
 pragma solidity ^0.4.19;
 
 
@@ -289,6 +297,17 @@ library BytesLib {
         return tempUint;
     }
 
+    function toBytes32(bytes _bytes, uint _start) internal  pure returns (bytes32) {
+        require(_bytes.length >= (_start + 32));
+        bytes32 tempBytes32;
+
+        assembly {
+            tempBytes32 := mload(add(add(_bytes, 0x20), _start))
+        }
+
+        return tempBytes32;
+    }
+
     function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) {
         bool success = true;