README: update links, use https:// versions

Author: generalmimon

README.md

@@ -5,17 +5,17 @@
 
 This library implements Kaitai Struct API for Python.
 
-[Kaitai Struct](http://kaitai.io) is a declarative language used for
+[Kaitai Struct](https://kaitai.io/) is a declarative language used for
 describe various binary data structures, laid out in files or in memory:
 i.e. binary file formats, network stream packet formats, etc.
 
-It is similar to [Python's Construct 2.9](http://construct.readthedocs.org/)
+It is similar to [Python's Construct 2.10](https://construct.readthedocs.io/en/latest/)
 but it is language-agnostic. The format description is done in YAML-based .ksy
 format, which then can be compiled into a wide range of target languages.
 
 Further reading:
 
-* [About Kaitai Struct](http://kaitai.io/)
-* [About API implemented in this library](http://doc.kaitai.io/stream_api.html)
-* [Python-specific notes](http://doc.kaitai.io/lang_python.html) in KS
+* [About Kaitai Struct](https://kaitai.io/)
+* [About API implemented in this library](https://doc.kaitai.io/stream_api.html)
+* [Python-specific notes](https://doc.kaitai.io/lang_python.html) in KS
   documentation discuss installation and usage of this runtime