message: DOC: merge double entry for Module_RTK_GIT_TAG in INSTALLATION.md
diff: @@ -6,12 +6,11 @@ Configuration, compilation and installation with ITK
  RTK is a module of [ITK](http://www.itk.org), the Insight Toolkit. Follow the instructions of the [ITK software guide](https://itk.org/ITKSoftwareGuide/html) ([chapter 2](https://itk.org/ITKSoftwareGuide/html/Book1/ITKSoftwareGuide-Book1ch2.html) mainly) for configuring and compiling ITK. The following CMake options are RTK specific:
  * `Module_RTK`: Activates RTK download and compilation. Default is `OFF`. Turn it `ON` to activate RTK or compile RTK independently (see below).
  -* `Module_RTK_GIT_TAG`: Git tag for the RTK download. By default, the RTK version which is downloaded and compiled is the one given in the [RTK.remote.cmake](https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/Remote/RTK.remote.cmake). Change this option to build another version. For example, you can change it to `master` to build the latest RTK version.
  +* `Module_RTK_GIT_TAG`: Git tag for the RTK download. By default, the RTK version which is downloaded and compiled is the one given in the [RTK.remote.cmake](https://github.com/InsightSoftwareConsortium/ITK/blob/master/Modules/Remote/RTK.remote.cmake). Change this option to build another version. For example, you can change it to `master` to build the latest RTK version. RTK is only maintained to be backward compatible with the latest ITK release and ITK master branch.
  * `RTK_BUILD_APPLICATIONS`: Activates the compilation of RTK's command line tools. Although RTK is mainly a toolkit, we also provide several command line tools for doing most of the available processing. These command line tools use [gengetopt](https://www.gnu.org/software/gengetopt/gengetopt.html). Several examples are available on the [Applications](http://wiki.openrtk.org/index.php/RTK_wiki_help#Applications) section of the [wiki](http://wikiopenrtk.org).
  * `RTK_USE_CUDA`: Activates CUDA computation. Default is `ON` if CMake has automatically found the CUDA package and a CUDA-compatible GPU, and `OFF` otherwise.
  * `RTK_CUDA_PROJECTIONS_SLAB_SIZE`: Set the number of projections processed at once in CUDA processing. Default is 16.
  * `RTK_PROBE_EACH_FILTER`: Activates the timing, CPU and CUDA memory consumption of each filter. Defaults is `OFF`. When activated, each filter processing is probed and a summary can be displayed. All command line applications display the result with `--verbose`.
  -* `Module_RTK_GIT_TAG`: Selects RTK version. RTK is only maintained to be backward compatible with the latest ITK release and ITK master branch.
  RTK will automatically be installed when installing ITK.
  