Replace README text - #34

Changed pages include:

• index.html - view
• 404.html - view
• get_started/index.html - view
• install/index.html - view
• license/index.html - view
• set_up/index.html - view
• tools/index.html - view
• troubleshooting/index.html - view
• uninstall/index.html - view
• upgrade/index.html - view

There are more changes not included in the list