README: Spelling and formatting fixes

* Several small spelling and capitalization fixes.

* Use consistent and better-looking formatting that is compatible with
  AsciiDoc (and partly compatible with RST).

Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>

README

@@ -1,20 +1,19 @@
+cgit - CGI for Git
+==================
 
-                       cgit - cgi for git
+This is an attempt to create a fast web interface for the Git SCM, using a
-
+built-in cache to decrease server I/O pressure.
-
-This is an attempt to create a fast web interface for the git scm, using a
-builtin cache to decrease server io-pressure.
-
 
 Installation
+------------
 
-Building cgit involves building a proper version of git. How to do this
+Building cgit involves building a proper version of Git. How to do this
 depends on how you obtained the cgit sources:
 
 a) If you're working in a cloned cgit repository, you first need to
-initialize and update the git submodule:
+initialize and update the Git submodule:
 
-  $ git submodule init     # register the git submodule in .git/config
+    $ git submodule init     # register the Git submodule in .git/config
     $ $EDITOR .git/config    # if you want to specify a different url for git
     $ git submodule update   # clone/fetch and checkout correct git version
 
@@ -23,28 +22,28 @@ version like this:
 
     $ make get-git
 
-
 When either a) or b) has been performed, you can build and install cgit like
 this:
 
     $ make
     $ sudo make install
 
-This will install cgit.cgi and cgit.css into "/var/www/htdocs/cgit". You can
+This will install `cgit.cgi` and `cgit.css` into `/var/www/htdocs/cgit`. You
-configure this location (and a few other things) by providing a "cgit.conf"
+can configure this location (and a few other things) by providing a `cgit.conf`
 file (see the Makefile for details).
 
+Dependencies
+------------
 
-Dependencies:
+* git 1.7.4
-  -git 1.7.4
+* zip lib
-  -zip lib
+* crypto lib
-  -crypto lib
+* openssl lib
-  -openssl lib
-
 
 Apache configuration
+--------------------
 
-A new Directory-section must probably be added for cgit, possibly something
+A new `Directory` section must probably be added for cgit, possibly something
 like this:
 
     <Directory "/var/www/htdocs/cgit/">
@@ -56,16 +55,17 @@ like this:
 
 
 Runtime configuration
+---------------------
 
-The file /etc/cgitrc is read by cgit before handling a request. In addition
+The file `/etc/cgitrc` is read by cgit before handling a request. In addition
 to runtime parameters, this file may also contain a list of repositories
-displayed by cgit (see cgitrc.5.txt for further details).
+displayed by cgit (see `cgitrc.5.txt` for further details).
-
 
 The cache
+---------
 
 When cgit is invoked it looks for a cache file matching the request and
-returns it to the client. If no such cachefile exist (or if it has expired),
+returns it to the client. If no such cache file exists (or if it has expired),
 the content for the request is written into the proper cache file before the
 file is returned.
 
@@ -74,10 +74,10 @@ stale cachefile is returned to the client. This is done to favour page
 throughput over page freshness.
 
 The generated content contains the complete response to the client, including
-the http-headers "Modified" and "Expires".
+the HTTP headers `Modified` and `Expires`.
-
 
 Online presence
+---------------
 
 * The cgit homepage is hosted by cgit at <http://git.zx2c4.com/cgit/about/>