fix headings in the readme.md

The headings in the readme.md didn't show properly on GitHub. So I've fixed that.

README.md

@@ -2,7 +2,7 @@
 
 _Encryption Against Global Mass Surveillance._
 
-#Contributing
+# Contributing
 
 It's important for a website like privacytools.io to be up-to-date. Keep an eye on software updates of the applications listed here. Follow recent news about providers that are recommended. We try our best to keep up but we're not perfect and the internet is changing fast. So if you find an error, or you think a provider should not be listed here, or a qualified service provider is missing or a browser plugin is not the best choice anymore or anything else...
 
@@ -11,20 +11,20 @@ It's important for a website like privacytools.io to be up-to-date. Keep an eye
 You can submit your suggestions here on GitHub [(Issues)](https://github.com/privacytoolsIO/privacytools.io/issues) and also in our [subreddit](https://www.reddit.com/r/privacytoolsIO/). Thank you.
 
 
-#Contributing Guidelines
+# Contributing Guidelines
 Please read this before contributing.
 
-##Rules
+## Rules
 
 - Be nice and respectful.
 - English only.
 - Be constructive.
 
-##Quality over Quantity
+## Quality over Quantity
 
 We're trying to keep it simple and promote the best tools, not all of them. Maximum are three software choices, but it's possible to add more under "Worth Mentioning" headlines. ([example](https://www.privacytools.io/#im)) 
 
-##Software Criteria
+## Software Criteria
 
 - Open Source
 - Cross-platform
@@ -33,22 +33,22 @@ We're trying to keep it simple and promote the best tools, not all of them. Maxi
 
 There can be exeptions if no software is available that meet the criteria.
 
-##Images
+## Images
 
 - Provider logos should be exactly 200 x 70 ([example](https://www.privacytools.io/img/provider/AirVPN.gif))
 - Tool logos should be exactly 120 x 120 ([example](https://www.privacytools.io/img/tools/ChatSecure.png))
 
-#Support privacytools.io
+# Support privacytools.io
 
 - [Donate.](https://www.privacytools.io/donate.html)
 - [Spread the word.](https://www.privacytools.io/#participate)
 - [Make suggestions on reddit.](https://www.reddit.com/r/privacytoolsIO/)
 - View and edit our website source code here on GitHub.
 
-#Community Translations
+# Community Translations
 - [繁体中文 / Chinese](https://github.com/twngo/privacytools-zh) - [GitHub](https://github.com/twngo/privacytools-zh)
 - [Español / Spanish](https://victorhck.gitlab.io/privacytools-es/) - [GitLab](https://gitlab.com/victorhck/privacytools-es)
 - [Deutsch / German](https://privacytools.it-sec.rocks/) - [GitHub](https://github.com/Anon215/privacytools.it-sec.rocks)
 
-#License
+# License
 [GNU General Public License v3.0](https://github.com/privacytoolsIO/privacytools.io/blob/master/LICENSE.txt)