Fix markdown headers in README.md

Markdown requires a space between the hashes and the header.

For example;
 * `##ABC` doesn't work
 * `## ABC` works

Author: mithro

README.md

@@ -1,6 +1,6 @@
 # Open Project Linter
 
-##About this project
+## About this project
 The Open Project Linter is an automated checklist that new (or experienced
 but forgetful) open source maintainers can use to make sure that they're
 using good practices in their documentation, code, and project resources.
@@ -11,8 +11,8 @@ but these are good practices for most open source projects!
 
 This is written in and supported on Python 3.
 
-##Getting Started
-###Installation
+## Getting Started
+### Installation
 It is recommended that you use a virtual environment in order to avoid
 dependency conflicts between projects. For more information,
 [a tutorial on virtual environments](http://docs.python-guide.org/en/latest/dev/virtualenvs/).
@@ -24,7 +24,7 @@ $ pip install open-project-linter
 Once you have installed the package, you should be able to run it from the
 command line (see [Example usage](#Example usage)).
 
-###Example usage
+### Example usage
 Once you have installed the package, if you want to check a local repository,
 make sure your virtual enviroment is activated and run:
 ```
@@ -33,7 +33,7 @@ $ openlinter -d path/to/repository/
 
 For more help, run `$ openlinter --help`.
 
-####Using configuration files
+#### Using configuration files
 Open Project Linter is configurable, so that you can decide what project
 features you want to check for and what file names you want to make sure
 exist. The default configuration file is located at
@@ -48,41 +48,41 @@ to use the file located at `path/to/rules.yml` to check the repository at
 `path/to/repository/`.
 
 ## Contributing
-###How to set up the dev environment
+### How to set up the dev environment
 To set this up for development, fork this repository, then clone it to
 your development machine using `git clone`.
 
 Once you've committed your changes and pushed them to your fork of the
 repository, file a pull request to get your contribution into the main
 repository.
 
-##Changelog
-###version 1.0.1
+## Changelog
+### version 1.0.1
 * Fix the error in checking for multiple commits where it was using the reflog
   not the commit history ([#30](https://github.com/OpenNewsLabs/open-project-linter/issues/30))
 
-###version 1.0
+### version 1.0
 * Update `ROADMAP.md` with pre-NICAR status
 * Fix the KeyError issue when default config was changed ([#27](https://github.com/OpenNewsLabs/open-project-linter/issues/27))
 * Split some of the main linter logic out into functions and improve module
   documentation
 * Add test fixtures for the git-related tests ([#22](https://github.com/OpenNewsLabs/open-project-linter/issues/22))
 
-###version 0.4dev
+### version 0.4dev
 * Now installs Pygments automatically when installed with pip, with or
   without pulling versions from `requirements.txt`
 * Now includes `rules.yml` in the package and uses a correct default path
   to it
 
-###version 0.3dev
+### version 0.3dev
 * Improve documentation
 * Fix accidental return value change in file content checker
 
-###version 0.2dev
+### version 0.2dev
 * Add automated tests
 * Fix path bug in file content checker
 
-###version 0.1dev
+### version 0.1dev
 * Command-line application invokable with `openlinter`, with help on
   how to run it
 * Given the path to a directory, checks for:
@@ -92,15 +92,15 @@ repository.
       multiple commits on any branch, and a named development/feature branch
 * Configurable via `rules.yml`
 
-##About
+## About
 This linter was designed and written by [Frances Hocutt](https://franceshocutt.com/cv/) via [Changeset Consulting](http://changeset.nyc/), a project management and maintainership consultancy focusing on open source. Sumana Harihareswara of Changeset Consulting attended the initial [OpenNews](https://opennews.org/) documentation sprint for [The Field Guide to Open Source in the Newsroom](http://fieldguide.opennews.org/) and suggested development of a companion tool to automate the guidebook's checklists as much as possible.
 
 We look forward to seeing the community add new linter rules to help new maintainers.
 
-##Contributors
+## Contributors
 * Frances Hocutt - https://franceshocutt.com https://github.com/fhocutt/
 * Sumana Harihareswara - https://changeset.nyc
 
-##License
+## License
 The Open Project Linter is available under v. 2.0 of the Apache license.
 See `LICENSE` for more information.