added invert(), switchColors() and switchSense() methods.
BarBuilder is a class that help you to make bars, looking like XP bars. Example: 10% of 20 = 2 are green and 18 are red -> in code this is:
new BarBuilder(10, 20).build();
Create a String wich the bar you want to have.
String myXpBar;
Initialize it with the bar you want. For example, if I want a bar that shows 12% with 50 caracters (default is '|')
myXpBar = new BarBuilder(12, 50).build;
Don't forget to use build() methods at the end. You can also change the colors, the caracter, the size of bar.
If you want to customize you bar, you can change the colors, the size of the bar (how many '|' there are) and the caracter (change '|' with another thing).
This methods will change the green bars to another color, exemple in code:
myXpBar = new BarBuilder(12, 50).setFullColor(ChatColor.BLUE).build;
This method will change you the red bars to another color, exemple in code:
myXpBar = new BarBuilder(12, 50).setEmptyColor(ChatColor.GOLD).build;
This method will change you the bar size (default is 100), exemple in code:
myXpBar = new BarBuilder(12, 150).build;
myXpBar = new BarBuilder(12).setSize(150).build;
(These methods do the same thing)
Preview: 
This method will change you the bar caracter (default is '|'), exemple in code:
myXpBar = new BarBuilder(12, 50).setCaracter('x').build;
myXpBar = new BarBuilder(12).setCaracter(':').setFullColor(ChatColor.YELLOW).setEmptyColor(ChatColor.GOLD).setSize(50).build;
This method will switch the fullColor with the emptyColor, exemple in code:
myXpBar = new BarBuilder(80).switchColors().build();
This method will change the sense of the bazar (default is Sense.NORMAL), exemple in code with Sense.REVERSE:
myXpBar = new BarBuilder(80).switchSense(BarBuilder.Sense.REVERSE).build();
This method will invert the Sense and the colors of the bar, nice if you want to make a countdown:
myXpBar = new BarBuilder(80).invert().build();
OR
myXpBar = new BarBuilder(80).switchColors().switchSense(BarBuilder.Sense.REVERSE).build();
As you can see, the two differents line of code do the same thing.
Return the percent of completed.
Return the "completed" color (default is Green).
Return the "non-completed" color (default is Red).
Return the character of the bar (default is '|').
Return the size of the bar (number of characters).







