Added fitSharp integration testing files.

Case 264
Added FitNesse executable, startup batch file, and wiki files.

I created the startup batch file to run the FitNesse wiki server executable using the Java console executable with specific command line options. The wiki files include a 'hello world' test page and the FitNess documentation (and acceptance tests).

Case 264
Added 'hello world' FitNesse integration test class.

Case 264
Moved FitNesse 'root' files.

Case 264
Removed one FitNesse acceptance test as the path to one of the files was too long to initially commit.

Case 264
Modified batch file to run FitNesse to include path to root content folder.

Case 264
Added link to 'hello world' test to 'front page'.

Case 264
Fixed 'hello world' test, removed test history files, added Git ignore for FitNesse files, and fixed 'hello world' test code.

Case 264
Updated front page text.

Case 264
Added basic integration test for opening a workbook file.

Case 264
Added integration test to test reading a cell from a worksheet in a workbook.

Case 264
Changed test method name to be called.

Case 264
Added integration test for checking whether a worksheet with a given name is in a workbook.

Case 264
Removed files that should be ignored.

Case 264
Added integration tests for checking for a worksheet with a given name and
reading a cell value and tried to fix open-workbook method.

Case 264
Added test for range address column count property.

Case 267
Implemented ColumnCount property.

Case 267
Added test for range address row count get property.

Case 267
Implemented range address row count get property.

Case 267
Added test for range address address get property.

Case 267