Remove warnings

include/openspace/util/progressbar.h

@@ -31,19 +31,21 @@ namespace openspace {
 
 class ProgressBar {
 public:
-	ProgressBar(int end, int width = 70);
-	ProgressBar(int end, int width, std::ostream& stream);
+	ProgressBar(int end, int width = 70, std::ostream& stream = std::cout);
 	~ProgressBar();
 
+    ProgressBar& operator=(const ProgressBar& rhs) = delete;
+
 	void print(int current);
+
 private:
 	int _width;
 	int _previous;
 	int _end;
 	std::ostream& _stream;
 
-}; // class ProgressBar
+};
 
-} // namespace opensapce
+} // namespace openspace
 
-#endif
+#endif // __PROGRESSBAR_H__