some fixes in README

README.md

@@ -20,13 +20,30 @@ If you're using LMDBAL as a system library you probably have no control over it'
 ```
 find_package(lmdbal)
 if (LMDBAL_FOUND)
-    target_include_directories(yourTarget PRIVATE {LMDBAL_INCLUDE_DIRS})
+    target_include_directories(yourTarget PRIVATE ${LMDBAL_INCLUDE_DIRS})
     target_link_libraries(yourTarget PRIVATE LMDBAL::LMDBAL)
 endif()
 ```
 
 #### As an embeded subproject
-//TODO
+
+If you're using LMDBAL as a embeded library you might want to control it's build options, for example you can run
+```
+set(BUILD_STATIC ON)
+```
+
+before including the library in your project. This will set the library to be build in a static mode.
+
+Then you want to run something like this
+```
+add_subdirectory(pathTo/yourEmbedded/libraries/lmdbal)
+add_library(LMDBAL::LMDBAL ALIAS LMDBAL)
+...
+
+target_link_libraries(yourTarget PRIVATE LMDBAL::LMDBAL)
+```
+
+The headers are added as `PUBLIC` so you might not even need to `target_link_libraries` them
 
 ### Building