update conan version references in preparation of new release (#65)

Author: jothepro

README.md

@@ -50,7 +50,7 @@ Add the generator as a build requirement in `conanfile.txt`:
 
 ```text
 [build_requires]
-djinni-generator/0.3.1
+djinni-generator/1.1.0
 ```
 
 ## Credits

docs/setup.md

@@ -31,5 +31,5 @@ Add the generator as a build requirement in `conanfile.txt`:
 
 ```text
 [build_requires]
-djinni-generator/1.0.0
+djinni-generator/1.1.0
 ```