Use ccache right (#1139)

* Prevent cmakelint warnings

Use 4 spaces for indent, no tabs

* Use ccache right

fix indents too at CMakeLists.txt

example/CMakeLists.txt

@@ -2,28 +2,29 @@
 cmake_minimum_required(VERSION 3.1)
 
 set(EXAMPLES
-	readFromString
-	readFromStream
-	stringWrite
-	streamWrite
-   )
+    readFromString
+    readFromStream
+    stringWrite
+    streamWrite
+)
 add_definitions(-D_GLIBCXX_USE_CXX11_ABI)
 set_property(DIRECTORY PROPERTY COMPILE_OPTIONS ${EXTRA_CXX_FLAGS})
 
 if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra ")
-else()	
-	add_definitions(
-	-D_SCL_SECURE_NO_WARNINGS
-	-D_CRT_SECURE_NO_WARNINGS
-	-D_WIN32_WINNT=0x601
-	-D_WINSOCK_DEPRECATED_NO_WARNINGS)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra ")
+else()
+    add_definitions(
+        -D_SCL_SECURE_NO_WARNINGS
+        -D_CRT_SECURE_NO_WARNINGS
+        -D_WIN32_WINNT=0x601
+        -D_WINSOCK_DEPRECATED_NO_WARNINGS
+    )
 endif()
 
-foreach (example ${EXAMPLES})
-	add_executable(${example} ${example}/${example}.cpp)
-	target_include_directories(${example} PUBLIC ${CMAKE_SOURCE_DIR}/include)
-	target_link_libraries(${example} jsoncpp_lib)
+foreach(example ${EXAMPLES})
+    add_executable(${example} ${example}/${example}.cpp)
+    target_include_directories(${example} PUBLIC ${CMAKE_SOURCE_DIR}/include)
+    target_link_libraries(${example} jsoncpp_lib)
 endforeach()
 
 add_custom_target(examples ALL DEPENDS ${EXAMPLES})