Renamed folders for consistency, using sim/athena/shared schema (#27)

Rename the following folders:
hal/lib/Athena -> hal/lib/athena
hal/lib/Desktop -> hal/lib/sim
hal/lib/Shared -> hal/lib/shared
wpilibc/Athena -> wpilibc/athena
wpilibc/simulation -> wpilibc/sim

Windows users may need to run gradlew clean after updating.

wpilibc/athena/src/Vision/ImageBase.cpp

@@ -0,0 +1,69 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2014-2016. All Rights Reserved.                        */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#include "Vision/ImageBase.h"
+#include "nivision.h"
+
+/**
+ * Create a new instance of an ImageBase.
+ *
+ * ImageBase is the base of all the other image classes. The constructor
+ * creates any type of image and stores the pointer to it in the class.
+ *
+ * @param type The type of image to create
+ */
+ImageBase::ImageBase(ImageType type) {
+  m_imaqImage = imaqCreateImage(type, DEFAULT_BORDER_SIZE);
+}
+
+/**
+ * Frees memory associated with an ImageBase.
+ *
+ * Destructor frees the imaq image allocated with the class.
+ */
+ImageBase::~ImageBase() {
+  if (m_imaqImage) imaqDispose(m_imaqImage);
+}
+
+/**
+ * Writes an image to a file with the given filename.
+ *
+ * @param fileName The name of the file to write
+ */
+void ImageBase::Write(const char* fileName) {
+  int success = imaqWriteFile(m_imaqImage, fileName, nullptr);
+  wpi_setImaqErrorWithContext(success, "Imaq Image writeFile error");
+}
+
+/**
+ * Gets the height of an image.
+ *
+ * @return The height of the image in pixels.
+ */
+int ImageBase::GetHeight() {
+  int height;
+  imaqGetImageSize(m_imaqImage, nullptr, &height);
+  return height;
+}
+
+/**
+ * Gets the width of an image.
+ *
+ * @return The width of the image in pixels.
+ */
+int ImageBase::GetWidth() {
+  int width;
+  imaqGetImageSize(m_imaqImage, &width, nullptr);
+  return width;
+}
+
+/**
+ * Access the internal IMAQ Image data structure.
+ *
+ * @return A pointer to the internal IMAQ Image data structure.
+ */
+Image* ImageBase::GetImaqImage() { return m_imaqImage; }