Suggest https in docs where it makes sense, closes #4056

src/Composer/Command/ConfigCommand.php

@@ -90,7 +90,7 @@ To edit the global config.json file:
 
 To add a repository:
 
-    <comment>%command.full_name% repositories.foo vcs http://bar.com</comment>
+    <comment>%command.full_name% repositories.foo vcs https://bar.com</comment>
 
 To remove a repository (repo is a short alias for repositories):
 
@@ -433,7 +433,7 @@ EOT
                 }
             }
 
-            throw new \RuntimeException('You must pass the type and a url. Example: php composer.phar config repositories.foo vcs http://bar.com');
+            throw new \RuntimeException('You must pass the type and a url. Example: php composer.phar config repositories.foo vcs https://bar.com');
         }
 
         // handle platform

src/Composer/Command/CreateProjectCommand.php

@@ -90,7 +90,7 @@ To setup a developer workable version you should create the project using the so
 controlled code by appending the <info>'--prefer-source'</info> flag.
 
 To install a package from another repository than the default one you
-can pass the <info>'--repository-url=http://myrepository.org'</info> flag.
+can pass the <info>'--repository-url=https://myrepository.org'</info> flag.
 
 EOT
             )

src/Composer/Util/ConfigValidator.php

@@ -86,7 +86,7 @@ class ConfigValidator
             $licenseValidator = new SpdxLicenses();
             if ('proprietary' !== $manifest['license'] && array() !== $manifest['license'] && !$licenseValidator->validate($manifest['license'])) {
                 $warnings[] = sprintf(
-                    'License %s is not a valid SPDX license identifier, see http://www.spdx.org/licenses/ if you use an open license.'
+                    'License %s is not a valid SPDX license identifier, see https://spdx.org/licenses/ if you use an open license.'
                     ."\nIf the software is closed-source, you may use \"proprietary\" as license.",
                     json_encode($manifest['license'])
                 );
@@ -111,7 +111,7 @@ class ConfigValidator
         }
 
         if (!empty($manifest['type']) && $manifest['type'] == 'composer-installer') {
-            $warnings[] = "The package type 'composer-installer' is deprecated. Please distribute your custom installers as plugins from now on. See http://getcomposer.org/doc/articles/plugins.md for plugin documentation.";
+            $warnings[] = "The package type 'composer-installer' is deprecated. Please distribute your custom installers as plugins from now on. See https://getcomposer.org/doc/articles/plugins.md for plugin documentation.";
         }
 
         // check for require-dev overrides