Run TIFF unit tests in CI

.travis.yml

@@ -21,6 +21,7 @@ branches:
 script:
   - dotnet restore
   - dotnet test tests/ImageSharp.Tests/ImageSharp.Tests.csproj -c Release -f "netcoreapp1.1"
+  - dotnet test tests/ImageSharp.Formats.Tiff.Tests/ImageSharp.Formats.Tiff.Tests.csproj -c Release -f "netcoreapp1.1"
 
 env:
   global:

tests/CodeCoverage/CodeCoverage.cmd

@@ -12,9 +12,12 @@ dotnet restore ImageSharp.sln
 dotnet build ImageSharp.sln --no-incremental -c release /p:codecov=true
 rem The -threshold options prevents this taking ages...
 tests\CodeCoverage\OpenCover.4.6.519\tools\OpenCover.Console.exe -target:"dotnet.exe" -targetargs:"test tests\ImageSharp.Tests\ImageSharp.Tests.csproj --no-build -c release /p:codecov=true" -register:user -threshold:10 -oldStyle -safemode:off -output:.\ImageSharp.Coverage.xml -hideskipped:All -returntargetcode -filter:"+[ImageSharp*]*" 
+tests\CodeCoverage\OpenCover.4.6.519\tools\OpenCover.Console.exe -target:"dotnet.exe" -targetargs:"test tests\ImageSharp.Tests\ImageSharp.Formats.Tiff.Tests.csproj --no-build -c release /p:codecov=true" -register:user -threshold:10 -oldStyle -safemode:off -output:.\ImageSharp.Formats.Tiff.Coverage.xml -hideskipped:All -returntargetcode -filter:"+[ImageSharp*]*" 
+
 
 if %errorlevel% neq 0 exit /b %errorlevel%
 
 SET PATH=C:\\Python34;C:\\Python34\\Scripts;%PATH%
 pip install codecov
-codecov -f "ImageSharp.Coverage.xml"
+codecov -f "ImageSharp.Coverage.xml"
+codecov -f "ImageSharp.Formats.Tiff.Coverage.xml"