Update links

README.md

@@ -3,25 +3,25 @@ ASN.1 modules for Python
 ------------------------
 [![PyPI](https://img.shields.io/pypi/v/pyasn1-modules.svg?maxAge=2592000)](https://pypi.org/project/pyasn1-modules)
 [![Python Versions](https://img.shields.io/pypi/pyversions/pyasn1-modules.svg)](https://pypi.org/project/pyasn1-modules/)
-[![Build status](https://travis-ci.org/etingof/pyasn1-modules.svg?branch=master)](https://secure.travis-ci.org/etingof/pyasn1-modules)
+[![Build status](https://travis-ci.org/etingof/pyasn1-modules.svg?branch=master)](https://travis-ci.org/etingof/pyasn1-modules)
 [![Coverage Status](https://img.shields.io/codecov/c/github/etingof/pyasn1-modules.svg)](https://codecov.io/github/etingof/pyasn1-modules/)
 [![GitHub license](https://img.shields.io/badge/license-BSD-blue.svg)](https://raw.githubusercontent.com/etingof/pyasn1-modules/master/LICENSE.txt)
 
-This is a small but growing collection of 
+This is a small but growing collection of
 [ASN.1](https://www.itu.int/rec/dologin_pub.asp?lang=e&id=T-REC-X.208-198811-W!!PDF-E&type=items)
 data structures expressed in Python terms using [pyasn1](https://github.com/etingof/pyasn1) data model.
 
 If ASN.1 module you need is not present in this collection, try using
 [Asn1ate](https://github.com/kimgr/asn1ate) tool that compiles ASN.1 documents
-into pyasn1 code. 
+into pyasn1 code.
 
 Feedback
 --------
 
 If something does not work as expected, try browsing pyasn1
 [mailing list archives](https://sourceforge.net/p/pyasn1/mailman/pyasn1-users/)
 or post your question
-[to Stack Overflow](http://stackoverflow.com/questions/ask).
+[to Stack Overflow](https://stackoverflow.com/questions/ask).
 If you want to contribute ASN.1 modules you have converted into pyasn1,
 please send me a pull request.