Update readme for cmake

README.md

@@ -23,8 +23,37 @@
 
 ### How to use it
 
-1. Build limereport.pro. It will create a limereport shared library  
-2. In your project connect the limereport library then in source code add:
+#### QMake
+
+- Build limereport.pro. It will create a limereport shared library  
+- In your project connect the limereport library
+
+#### CMake
+
+To use in your application without installation
+
+There are 2 possible ways:
+
+- Use cmake subdirectory in your CMakeLists.txt:
+
+```cmake
+add_subdirectory(LimeReport)
+target_link_libraries(myapp PRIVATE limereport-qt${QT_VERSION_MAJOR})
+```
+- Use cmake FetchContent in your CMakeLists.txt:
+
+```cmake
+include(FetchContent)
+FetchContent_Declare(
+  LimeReport
+  GIT_REPOSITORY https://github.com/fralx/LimeReport.git
+  GIT_TAG        sha-of-the-commit
+)
+FetchContent_MakeAvailable(LimeReport)
+target_link_libraries(myapp PRIVATE limereport-qt${QT_VERSION_MAJOR})
+```
+
+- Then in source code add:
 
 ```cpp
   #include "lrreportengine.h" to add report engine