Markdownlint (#2880)

* markdownlint

I have started to use
[markdownlint](https://github.com/DavidAnson/markdownlint/) to find
typos in Markdown. Let's discuss which rules to enforce / disable /
customize

* markdownlint cli/readme

4 files changed, 33 insertions, 14 deletions

diff --git a/.markdownlint.json b/.markdownlint.json
new file mode 100644
index 000000000..ad37f178e
--- /dev/null
+++ b/.markdownlint.json
@@ -0,0 +1,16 @@
+{
+	"default": true,
+	"first-line-heading": false,
+	"line-length": false,
+	"no-hard-tabs": false,
+	"no-inline-html": {
+		"allowed_elements": [ "kbd" ]
+	},
+	"no-multiple-blanks": {
+		"maximum": 2
+	},
+	"ul-indent": false,
+	"ul-style": {
+		"style": "consistent"
+	}
+}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5cce8c05..6b04c4a7e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -825,6 +825,7 @@
 
 
 ## 2016-07-23 FreshRSS 1.4.0
+
 ## 2016-06-12 FreshRSS 1.3.2-beta
 
 * Compatibility
@@ -987,7 +988,7 @@
 ## 2015-01-15 FreshRSS 0.9.4 (beta)
 
 * Feature
-	* Extension system (!!): some extensions are available at https://github.com/FreshRSS/Extensions
+	* Extension system (!!): some extensions are available at [github.com/FreshRSS/Extensions](https://github.com/FreshRSS/Extensions)
 * Refactoring
 	* Front controller (FreshRSS class)
 	* Configuration system
@@ -1127,8 +1128,8 @@
 
 * API compatible with Google Reader API level 2
 	* FreshRSS can now be used from e.g.:
-		* (Android) News+ https://play.google.com/store/apps/details?id=com.noinnion.android.newsplus.extension.google_reader
-		* (Android) EasyRSS https://github.com/Alkarex/EasyRSS
+		* (Android) [News+](https://play.google.com/store/apps/details?id=com.noinnion.android.newsplus.extension.google_reader)
+		* (Android) [EasyRSS](https://github.com/Alkarex/EasyRSS)
 * Basic support for audio and video podcasts
 * Searching
 	* New search filters date: and pubdate: accepting ISO 8601 date intervals such as `date:2013-2014` or `pubdate:P1W`
@@ -1257,10 +1258,10 @@
 			* Les images, CSS, scripts sont servis sans cookie
 		* Utilise “HttpOnly” pour plus de sécurité
 	* Nouvel “agent utilisateur” exposé lors du téléchargement des flux, par exemple :
-		* “FreshRSS/0.7 (Linux; http://freshrss.org) SimplePie/1.3.1”
+		* `FreshRSS/0.7 (Linux; http://freshrss.org) SimplePie/1.3.1`
 	* Script d’actualisation avec plus de messages
 		* Sur la sortie standard, ainsi que dans le log système (syslog)
-	* Affichage du numéro de version dans "À propos"
+	* Affichage du numéro de version dans “À propos”
 
 
 ## 2013-11-21 FreshRSS 0.6.1
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index bc33c2ef6..c673eac96 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -1,4 +1,4 @@
-# How to contribute to FreshRSS?
+# How to contribute to FreshRSS
 
 ## Chat with us
 
@@ -19,10 +19,10 @@ If you have to create a new ticket, try to apply the following advices:
 - Give an explicit title to the ticket so it will be easier to find it later.
 - Be as exhaustive as possible in the description: what did you do? What is the bug? What are the steps to reproduce the bug?
 - We also need some information:
-    + Your FreshRSS version (on about page or `constants.php` file)
-    + Your server configuration: type of hosting, PHP version
-    + Your storage system (SQLite, MySQL, MariaDB, PostgreSQL)
-    + If possible, the related logs (PHP logs and FreshRSS logs under `data/users/your_user/log.txt`)
+	- Your FreshRSS version (on about page or `constants.php` file)
+	- Your server configuration: type of hosting, PHP version
+	- Your storage system (SQLite, MySQL, MariaDB, PostgreSQL)
+	- If possible, the related logs (PHP logs and FreshRSS logs under `data/users/your_user/log.txt`)
 
 ## Fix a bug
 
diff --git a/cli/README.md b/cli/README.md
index b4112bf63..1e9e72d4d 100644
--- a/cli/README.md
+++ b/cli/README.md
@@ -86,19 +86,21 @@ cd /usr/share/FreshRSS
 # Optimize database (reduces the size) for a given user (perform `OPTIMIZE TABLE` in MySQL, `VACUUM` in SQLite)
 ```
 
-#### Note about cron
+### Note about cron
 
 Some commands display informations on standard error, cron will send an email with thoses informations every time the command will be executed (exited zero or non-zero).
 
 To avoid cron sending email on success:
+
 ```sh
 @daily /usr/local/bin/my-command > /var/log/cron-freshrss-stdout.log 2>/var/log/cron-freshrss-stderr.log || cat /var/log/cron-freshrss-stderr.log
 ```
 
 Explanations:
-- _/usr/local/bin/my-command > /var/log/cron-freshrss-stdout.log_ : redirect the standard output to a log file
-- _/usr/local/bin/my-command 2> /var/log/cron-freshrss-stderr.log_ : redirect the standard error to a log file
-- _|| cat /var/log/cron-freshrss-stderr.log_ : if the exit code of _/usr/local/bin/my-command_ is non-zero, then it send by mail the content error file.
+
+* `/usr/local/bin/my-command > /var/log/cron-freshrss-stdout.log`_ : redirect the standard output to a log file
+* `/usr/local/bin/my-command 2> /var/log/cron-freshrss-stderr.log` : redirect the standard error to a log file
+* `|| cat /var/log/cron-freshrss-stderr.log_ : if the exit code of _/usr/local/bin/my-command` is non-zero, then it send by mail the content error file.
 
 Now, cron will send you an email only if the exit code is non-zero and with the content of the file containing the errors.