Extend and simplify installation instructions

[schuhschuh]

Comments from @ledigchr by email:

The installation page is currently a bit less clear. Perhaps it would be good to provide an example of how to build mirtk without understanding cmake?

E.g. cmake ..; make -j 8; worked for me on Linux.

A user might not know how to run the cmake gui? On my Mac there is no command line command ‘cmake’, here I need to download cmake and run it from the applications.

[schuhschuh]

Thanks @ledigchr for the comments. I also think the installation instructions could be less cluttered. For example, the dependencies table could be on a separate page. And there could be sections for each OS and common build tool, i.e.,

• Linux + GNU Make
• Linux + Ninja
• OS X + GNU Make
• OS X + Ninja
• OS X + Xcode
• Windows + Visual Studio

with a brief summary of the steps usually needed. Only when this doesn’t work out, a more generic, lengthy description can be looked up.

What is also missing, to build all modules without GUI, the cmake command would be:

cmake -D BUILD_ALL_MODULES=ON $MIRTK_SOURCE_DIR

[schuhschuh]

Also, for OS X change default installation directory to /Users/<user>/Applications/MIRTK to avoid difficulties for unexperienced users. This directory can further be viewed easily in the Finder.