docs: refresh CONTRIBUTING.md

Signed-off-by: Alex T <alext.mkrs@gmail.com>

Author: alext-mkrs

CONTRIBUTING.md

@@ -1,7 +1,7 @@
 Contributing to Eclipse Mraa (libmraa)                   {#contributing}
 ======================
 
-Eclipse Mraa is an opensource project and we are actively looking for people to help
+Eclipse Mraa is an open source project and we are actively looking for people to help
 with:
 
 - Writing platform supports for all types of boards running linux
@@ -16,7 +16,6 @@ issue first so we can avoid disappointments come merging time!
 Basic rules
 -----------
 - Your code must build
-- Commits must have a sign-off line by at least yourself
 - Commits must be named <file/module>: Some decent description
 - Try not to break master. In any commit.
 - Try to split commits up logically, you will be asked to rebase them if they
@@ -28,13 +27,13 @@ Coding Style
 ------------
 
 Coding style for all code is defined by clang-format, have a look at it. Avoid
-styling fixes as they make history difficult to read. Javascript & Java can
+styling fixes as they make history difficult to read. JavaScript & Java can
 also be parsed through the clang-format, it complains but seems to do an ok
 job. Few exceptions to coding styles:
-- All python code is indented by 2 spaces
-- CmakeLists files are 2 space indented and a space is required before all
-  brackets so endif () and if () and command (). Also use lowercase for
-  everything but variables. Cmake is case insensitive but this isn't the wild
+- All Python code is indented by 2 spaces
+- CMakeLists files are 2 space indented and a space is required before all
+  brackets so `endif ()` and `if ()` and `command ()`. Also use lowercase for
+  everything but variables. CMake is case insensitive but this isn't the wild
   wild west ;-)
 
 Use common sense and don't be afraid to challenge something if it doesn't make sense!
@@ -43,7 +42,7 @@ Author Rules
 ------------
 
 If you create a file, then add yourself as the Author at the top. If you did a
-large contribution to it (or if you want to ;-)), then fee free to add yourself
+large contribution to it (or if you want to ;-)), then feel free to add yourself
 to the contributors list in that file. You can also add your own copyright
 statement to the file but cannot add a license of your own. If you're borrowing
 code that comes from a project with another license, make sure to explicitly
@@ -52,25 +51,23 @@ note this in your PR.
 Eclipse Contributor Agreement
 ------------
 
-Your contribution cannot be accepted unless you have a signed [ECA - Eclipse Foundation Contributor Agreement](http://www.eclipse.org/legal/ECA.php) in place.
+Your contribution cannot be accepted unless you have a signed [ECA - Eclipse Foundation Contributor Agreement](https://www.eclipse.org/legal/eca/) in place.
 
 Here is the checklist for contributions to be _acceptable_:
 
-1. [Create an account at Eclipse](https://dev.eclipse.org/site_login/createaccount.php).
+1. [Create an account at Eclipse](https://accounts.eclipse.org/user/register).
 2. Add your GitHub user name in your account settings.
-3. [Log into the project's portal](https://projects.eclipse.org/) and sign the ["Eclipse ECA"](https://projects.eclipse.org/user/sign/cla).
-4. Ensure that you [_sign-off_](https://wiki.eclipse.org/Development_Resources/Contributing_via_Git#Signing_off_on_a_commit) your Git commits.
+3. [Log in to the projects forge](https://www.eclipse.org/contribute/cla/) and sign the ["Eclipse ECA"](https://accounts.eclipse.org/user/eca).
 5. Ensure that you use the _same_ email address as your Eclipse account in commits.
 6. Include the appropriate copyright notice and license at the top of each file.
 
-Your signing of the ECA will be verified by a webservice called 'ip-validation'
-that checks the email address that signed-off on your commits has signed the
+Your signing of the ECA will be verified by a Github Check called 'eclipsefdn/eca'
+that checks the email address that authored your commits has signed the
 ECA. **Note**: This service is case-sensitive, so ensure the email that signed
-the ECA and that signed-off on your commits is the same, down to the case.
+the ECA and that authored your commits is the same, down to the case.
 
 Where to find us
 ----------------
 
 Hop onto the freenode network on IRC and join #mraa. Please be patient as we're
 not always online.
-