Update tmux.html.markdown

Corrected page structure/style to conform to other tutorials
```
Line  18: Removed "tmux" as it has other purposes as well as quickly starting a blank session that will not be covered
Line  45: Added Meta/Alt explanation 
Line 126: Moved 'bind-key C-a send-prefix" to the group that requires it
Line 184: Added comment 
Line 186: Added comment pointing to resource required (if enabled)

- Removed 'set-option -g status-justify centre'

```

tmux.html.markdown

@@ -12,10 +12,11 @@ tmux</a> is a terminal multiplexer: it enables a number of terminals to be
 created, accessed, and controlled from a single screen. tmux may be detached 
 from a screen and continue running in the background, then later reattached.
 
+
 ```bash
 # We’ll start off with managing tmux from a terminal:
 
-  tmux | tmux new   # Create an unamed session
+  tmux new          # Create a new session
    -s "Session"     # Create named session
    -n "Window"      # Create named Window
    -c "/dir"        # Start in target directory
@@ -41,8 +42,9 @@ from a screen and continue running in the background, then later reattached.
 	
   (C-b) == Ctrl + b
 
-#  This combination is the default prefix key that is to be used in conjunction
-# with a keybind to produce the stated effect. 
+  (M-1) == Alt + b
+  	   -or-
+  	   Meta + b
 
 
 # The default keybinds are as follows:
@@ -92,7 +94,6 @@ from a screen and continue running in the background, then later reattached.
                
    M-Up, M-Down    # Resize the current pane in steps of five cells.
    M-Left, M-Right
-```               
 
 
 ### Configuring ~/.tmux.conf
@@ -100,13 +101,10 @@ from a screen and continue running in the background, then later reattached.
   tmux.conf can be used to set options automatically on start up, much 
 like how .vimrc or init.el are used.
 
-```bash
+```
 	# Example tmux.conf
 	# 2014.9
 	
-### Keybinds  
-###########################################################################  
-  
 	## Prefix Adjustment   
 	
 	# Unbind C-b as the default prefix 
@@ -114,16 +112,18 @@ unbind-key C-b
 	
 	# Set ` as the default prefix
 	set-option -g prefix `
+	
+	# Set C-a as the default prefix
 	#set option -g prefix C-a
 	
 	# Return to previous window when prefix is pressed twice
 	bind-key C-a last-window  
 	bind-key ` last-window 
-bind-key a send-prefix
 	
 	# Allow swapping C-a and ` using F11/F12 
 	bind-key F11 set-option -g prefix C-a  
 	bind-key F12 set-option -g prefix `  
+	bind-key C-a send-prefix
 	  
 	## Index Start  
 	set -g base-index 1  
@@ -134,12 +134,7 @@ bind f next-window
 	bind E swap-window -t -1  
 	bind F swap-window -t +1  
 	
-  
-### Theme  
-###########################################################################  
-  
 	## Statusbar Color Palatte
-#set-option -g status-justify centre  
 	set-option -g status-justify left  
 	set-option -g status-bg black  
 	set-option -g status-fg white  
@@ -168,10 +163,6 @@ setw -g window-status-content-fg yellow
 	setw -g window-status-activity-attr default  
 	setw -g window-status-activity-fg yellow  
 	
-  
-### UI  
-###########################################################################  
-  
 	## Window Interface Adjustments  
 	set-option -g status-utf8 on  
 	setw -g mode-keys vi  
@@ -188,17 +179,20 @@ set-option -g visual-bell off
 	## Statusbar Adjustments  
 	set -g status-left ' #[fg=red]#H#[fg=green]:#[fg=white]#S #[fg=green]][#[default] '  
 	set -g status-interval 5  
-#set -g status-right ' #[fg=green]][#[fg=white] #T #[fg=green]][ #[fg=blue]%Y-%m-%d #[fg=white]%H:%M#[default] '  
+	
+	# Statusbar with right-aligned Date / Time
+	set -g status-right ' #[fg=green]][#[fg=white] #T #[fg=green]][ #[fg=blue]%Y-%m-%d #[fg=white]%H:%M#[default] '  
 	
 	## Show performance counters in statusbar
+	# Requires https://github.com/thewtex/tmux-mem-cpu-load/
 	#set -g status-right ' #[fg=green]][#[fg=white] #(tmux-mem-cpu-load 5 4) #[fg=green]][ #[fg=yellow]%H:%M#[default] '  
 	
-  
-### Misc  
-###########################################################################  
+	## Scrollback/History limit
 	set -g history-limit 4096
+	
 	bind r source-file ~/.tmux.conf
 ```
+```
 
 ### External Resources