IVGCVSW-4186 Add EXP unit tests for TfLiteParser

 * Updated Documentation
 * Created unit test file

Signed-off-by: Ryan OShea <Ryan.OShea2@arm.com>
Change-Id: Ic8384b5ed21ac53f918860be8a98c0ac7477d0e1
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9998038..692bc04 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -769,6 +769,7 @@
              src/armnnTfLiteParser/test/DepthwiseConvolution2D.cpp
              src/armnnTfLiteParser/test/Dequantize.cpp
              src/armnnTfLiteParser/test/DetectionPostProcess.cpp
+             src/armnnTfLiteParser/test/Exp.cpp
              src/armnnTfLiteParser/test/FullyConnected.cpp
              src/armnnTfLiteParser/test/L2Normalization.cpp
              src/armnnTfLiteParser/test/Maximum.cpp