Added ability to use dev-conanfile.txt during project generation

.gitignore

@@ -14,3 +14,4 @@ output/
 output-dev/
 output-release/
 set-conan-user.bat
+dev-conanfile.txt

CMakeLists.txt

@@ -92,13 +92,20 @@ message(STATUS "==============================================")
 # conan.io this must be after options.
 
 include(StsConan)
-conan_cmake_run(CONANFILE conanfile.txt
+set(INTERNAL_CONAN_FILE conanfile.txt)
+set(INTERNAL_CONAN_DEV_FILE dev-conanfile.txt)
+if (EXISTS "${CMAKE_SOURCE_DIR}/${INTERNAL_CONAN_DEV_FILE}")
+    set(INTERNAL_CONAN_FILE ${INTERNAL_CONAN_DEV_FILE})
+    message(STATUS "Used Conan dev file = ${INTERNAL_CONAN_FILE}")
+    message(STATUS "==============================================")    
+endif()
+conan_cmake_run(CONANFILE ${INTERNAL_CONAN_FILE}
                 BASIC_SETUP CMAKE_TARGETS KEEP_RPATHS
                 BUILD outdated)
 
 #----------------------------------------------------------------------------------#
 #//////////////////////////////////////////////////////////////////////////////////#
-#----------------------------------------------------------------------------------#		
+#----------------------------------------------------------------------------------#
 # help targets
 
 add_custom_target("Clean-Install-Dir"

readme.md

@@ -38,7 +38,10 @@ Importing is still under developing and doesn't work properly!
 ...
 ```
 - If you are going to develop you may generate the `Visual Studio 2017` project with the file `msvc-2017.bat` in the root repository folder.  
-  You also may copy that file and make necessary changes as you wish using the origin script as the example.  
+  You may copy that file and make necessary changes as you wish using the origin script as the example.  
+  You may copy `conanfile.txt` and name it as `dev-conanfile.txt` then this file will be used during project generation. 
+    It is useful when you are developing only for certaing 3Ds Max versions but you want all the versions to be built with your CI.  
+    **Don't forget to update data** in the `dev-conanfile.txt` when you have pull new changes from the repository because dependencies' versions could be changed.
 - If you just want to build the plugins you may use the scripts inside the `ci` folder.  
   Pay attention those scripts must be run from the root repository folder `ci/build-vs2017.bat`.
     - `ci/build-release-vs2017.bat` - Builds and installs release target only. This script is usually used for making public release versions.