README: http -> https, update links, etc.

1 files changed, 24 insertions, 26 deletions

diff --git a/README.md b/README.md
index 07e00a37b5..86eb3c2712 100644
--- a/README.md
+++ b/README.md
@@ -13,8 +13,8 @@ To get started with Mixxx:
 
 ## Roadmap
 
-The Mixxx team is hard at work on Mixxx 2.2. The best place to keep track of
-2.2 development is the [2.2.0 milestone page on Launchpad][launchpad 2.2.0].
+The Mixxx team is hard at work on Mixxx 2.3. The best place to keep track of
+2.3 development is the [2.3.0 milestone page on Launchpad][launchpad 2.3.0].
 
 A more general roadmap can be found on [the wiki][wiki roadmap].
 
@@ -68,7 +68,7 @@ Mixxx is a vibrant community of hackers, DJs and artists. To keep track of
 development and community news:
 
 - Chat with us on [Zulip][zulip].
-- Follow us on [Twitter], [Facebook], and [G+].
+- Follow us on [Twitter] and [Facebook].
 - Subscribe to the [Mixxx Development Blog][blog].
 - Join the developer [mailing list].
 - Post on the [Mixxx forums][forums].
@@ -78,32 +78,30 @@ development and community news:
 Mixxx is released under the GPLv2. See the LICENSE file for a full copy of the
 license.
 
-[mixxx]: http://www.mixxx.org
-[download]: http://www.mixxx.org/download
-[builds]: http://downloads.mixxx.org/builds/
-[launchpad]: http://bugs.launchpad.net/mixxx
-[fileabug]: http://bugs.launchpad.net/mixxx/+filebug
-[twitter]: http://twitter.com/mixxxdj
+[mixxx]: https://www.mixxx.org
+[download]: https://www.mixxx.org/download
+[builds]: https://downloads.mixxx.org/builds/
+[launchpad]: https://bugs.launchpad.net/mixxx
+[fileabug]: https://bugs.launchpad.net/mixxx/+filebug
+[twitter]: https://twitter.com/mixxxdj
 [facebook]: https://www.facebook.com/pages/Mixxx-DJ-Software/21723485212
-[g+]: https://plus.google.com/102441931224839455484/posts
-[blog]: http://mixxxblog.blogspot.com
-[manual]: http://www.mixxx.org/manual/latest/
-[wiki]: http://www.mixxx.org/wiki/
-[faq]: http://mixxx.org/wiki/doku.php/faq
-[forums]: http://www.mixxx.org/forums/
-[compiling on linux]: http://mixxx.org/wiki/doku.php/compiling_on_linux
-[compiling on macOS]: http://mixxx.org/wiki/doku.php/compiling_on_os_x
-[compiling on windows]: http://mixxx.org/wiki/doku.php/compiling_on_windows
+[blog]: https://mixxxblog.blogspot.com
+[manual]: https://www.mixxx.org/manual/latest/
+[wiki]: https://www.mixxx.org/wiki/
+[faq]: https://mixxx.org/wiki/doku.php/faq
+[forums]: https://www.mixxx.org/forums/
+[compiling on linux]: https://mixxx.org/wiki/doku.php/compiling_on_linux
+[compiling on macOS]: https://mixxx.org/wiki/doku.php/compiling_on_os_x
+[compiling on windows]: https://mixxx.org/wiki/doku.php/compiling_on_windows
 [mailing list]: https://lists.sourceforge.net/lists/listinfo/mixxx-devel
-[irc channel]: http://mixxx.org/irc.php
-[SCons]: http://www.scons.org/
-[launchpad 2.2.0]: https://launchpad.net/mixxx/+milestone/2.2.0
-[wiki roadmap]: http://mixxx.org/wiki/doku.php/development_roadmap
+[SCons]: https://www.scons.org/
+[launchpad 2.3.0]: https://launchpad.net/mixxx/+milestone/2.3.0
+[wiki roadmap]: https://mixxx.org/wiki/doku.php/development_roadmap
 [easybugs]: https://bugs.launchpad.net/mixxx/+bugs?field.searchtext=&orderby=-importance&search=Search&field.status%3Alist=NEW&field.status%3Alist=CONFIRMED&field.status%3Alist=TRIAGED&field.status%3Alist=INPROGRESS&field.status%3Alist=INCOMPLETE_WITH_RESPONSE&field.status%3Alist=INCOMPLETE_WITHOUT_RESPONSE&assignee_option=any&field.assignee=&field.bug_reporter=&field.bug_commenter=&field.subscriber=&field.structural_subscriber=&field.tag=easy&field.tags_combinator=ANY&field.has_cve.used=&field.omit_dupes.used=&field.omit_dupes=on&field.affects_me.used=&field.has_patch.used=&field.has_branches.used=&field.has_branches=on&field.has_no_branches.used=&field.has_no_branches=on&field.has_blueprints.used=&field.has_blueprints=on&field.has_no_blueprints.used=&field.has_no_blueprints=on
-[creating skins]: http://mixxx.org/wiki/doku.php/creating_skins
+[creating skins]: https://mixxx.org/wiki/doku.php/creating_skins
 [help translate content]: https://www.transifex.com/projects/p/mixxxdj
-[Mixxx i18n wiki]: http://mixxx.org/wiki/doku.php/internationalization
-[Mixxx localization forum]: http://mixxx.org/forums/viewforum.php?f=10
+[Mixxx i18n wiki]: https://mixxx.org/wiki/doku.php/internationalization
+[Mixxx localization forum]: https://mixxx.org/forums/viewforum.php?f=10
 [Mixxx glossary]: https://www.transifex.com/projects/p/mixxxdj/glossary/l/en/
-[hardware compatibility]: http://mixxx.org/wiki/doku.php/hardware_compatibility
+[hardware compatibility]: https://mixxx.org/wiki/doku.php/hardware_compatibility
 [zulip]: https://mixxx.zulipchat.com/