Remove `EncodedData` replacing with `Array<UInt8>` (#20)

* Replace `EncodedData` with `Array<UInt8>`.
* Update documentation after replacing `EncodedData` with `Array<UInt8>`.
* Change signature of StorageContainerReaderWriter.write from `write(_ storageContainer: StorageContainer, to buffer: UnsafeMutableRawBufferPointer) -> Int` to `convert(_ storageContainer: StorageContainer) -> [UInt8]`.
* Renamed EncodedDataNegativeTests to BinaryDecoderByteArrayTests.
* Adjust binary format alignment decreasing padding.

Merge pull request #13 from stickytools/update-docs-url

Updated docs url.

README.md corrections/refinements.

Update CHANGELOG.md

Remove space from link name [] and link address ().

Update README.md

Removing CocoaPods references until the pod version is released.