Some language fixes.

INSTALL

@@ -22,7 +22,7 @@ Each of these steps is covered in detail below.
 - Unpack the SquirrelMail package in a web-accessible location.
 - Select a data-dir and attachment dir, outside the webtree (e.g. in /var).
   The data-dir (for user prefs) should be owned by the user the webserver
-  runs as (eg www-data). The attachment dir (for uploading files as
+  runs as (e.g. www-data). The attachment dir (for uploading files as
   attachments) should be file mode 0730 and in the same group as the
   webserver.
 - Run config/conf.pl from the command line. Use the D option to load
@@ -43,7 +43,7 @@ Each of these steps is covered in detail below.
   You can find PHP at http://www.php.net. See the documentation that
   comes with PHP for instructions how to set it up.
 
-  The PHP IMAP extension is NOT neccessary at all (but won't harm)!
+  The PHP IMAP extension is NOT necessary at all (but won't harm)!
   Below is a list of optional PHP extensions:
 
   --with-ldap     Required for LDAP addressbooks
@@ -194,12 +194,13 @@ c. Setting up SquirrelMail
 
   http://sourceforge.net/project/showfiles.php?group_id=311&package_id=110388
 
-  Each translation contains install script that copies required files
-  into appropriate locations. If you can't run that script, you can extract
-  contents of translation packages into your SquirrelMail directory.
+  Each translation contains an install script that copies the required files
+  into their appropriate locations. If you can't run that script, you can
+  extract the contents of translation packages into your SquirrelMail
+  directory.
 
-  NOTE No.1: *-src.tar.gz, *-src.tar.bz2 and *-src.zip archives does not contain
-  compiled translation files. You will need to run compilelocales script
+  NOTE No.1: *-src.tar.gz, *-src.tar.bz2 and *-src.zip archives do not contain
+  compiled translation files. You will need to run the compilelocales script
   in order to get all gettext binary translations.
 
   NOTE No.2: You might need to restart your webserver before using translations.
@@ -208,8 +209,8 @@ c. Setting up SquirrelMail
 7. PLUGINS
 ----------
 
-  SquirrelMail package includes some standard plugins. These plugins can be 
-  enabled in SquirrelMail configuration script.
+  The SquirrelMail package includes some standard plugins. These plugins can be 
+  enabled in the SquirrelMail configuration script.
 
   Included plugins can use additional configuration files:
   * change_password