I downloaded visual studio community 2015. I tried to create a Shared Project and am getting an error:
Content from Microsoft.Windows.UI.Xaml.CSharp.targets
This is not a hard problem. Mr. Kriper (the original asker of the question) likely installed using the "Default Install" for his version of Visual Studio 2015. Mr. Kondrasovas in Answer 2 points to needing to install more components. His approach resulted in a Visual Studio displaying a setup utility error which is no fault of Mr. Kondrasovas. Mr. Kondrasovas answer is likely correct if you do not encounter an error (I have no way to verify the answer).
The solution is to go to Control Panel | Programs | Uninstall a program. Select Visual Studio 2015 and "Modify" the installed instance of Visual Studio 2015:
[sorry I cannot show the image b/c I do not have a 10 for a reputation and StackOverflow.com is blocking me]
The previous (imaginary) screenshot is from the default install of Visual Studio 2015 Professional. You can mess around and figure out the exact feature to install or if you have the disk space, simply click on "Select All" and then "Next". Hint: the "Next" button is not enabled until a change is made to the selected components of Visual Studio 2015.
If you want to see the missing image a complete write up, I wrote a blog post on the issue: http://www.softwarepronto.com/2015/08/visual-studio-2015-error-adding-shared.html