README.md in danica-2.6.4 vs README.md in danica-2.7.1

@@ -248,12 +248,12 @@
 end
 
 fx = Danica::Function::Spatial.new(
   time: :t,
   acceleration: 'a',
-  initial_space: { name: :S0, latex: 'S_0', gnu: 'S0' },
-  initial_velocity: { name: :V0, latex: 'V_0', gnu: 'V0' }
+  initial_space: { name: :S0, latex: 'S_0', gnuplot: 'S0' },
+  initial_velocity: { name: :V0, latex: 'V_0', gnuplot: 'V0' }
 )
 ```
 
 ##### to_tex
 ```ruby
@@ -509,20 +509,20 @@
 
 Variables can also behave differently when converting to tex or gnu
 
 ```ruby
 Danica::DSL.build do
-  variable(name: :frequency, latex: '\lambda', gnu: :f)
+  variable(name: :frequency, latex: '\lambda', gnuplot: :f)
 end
 ```
 would produce different ```#to_tex``` and ```#to_gnu``` results (```\lambda``` and ```f``` respectvly)
 
 Also, valued variables will always use their value on string representation
 
 ```ruby
 Danica::DSL.build do
-  variable(name: :frequency, latex: '\lambda', gnu: :f, value: 2)
+  variable(name: :frequency, latex: '\lambda', gnuplot: :f, value: 2)
 end
 ```
 
 will always return ```2``` for both ```to(:tex)``` and ```to(:gnu)``` calls
 
@@ -599,16 +599,59 @@
 
 While variables with value have a numeric string representation, constants will always
 be represented by their string attribute
 
 ```ruby
-Danica::Wrapper::Constant.new(gnu: 'pi', latex: '\pi', value: 3.141592)
+Danica::Wrapper::Constant.new(gnuplot: 'pi', latex: '\pi', value: 3.141592)
 ```
 which will have the returns of ```#to(format)``` obeying the following
 
 ```ruby
 {
   tex: '\pi',
-  gnu: 'pi',
+  gnuplot: 'pi',
   f: 3.141592
 }
 ```
+
+###Formatting
+When generating the output, you can choose options or even
+create a formatted object
+
+#### decimals
+define the float decimals
+
+```ruby
+value = 1 / 3.0
+expression = Danica.build(:x) do
+  x + value
+end
+
+expression.to_tex(decimals: 3)
+```
+
+returns
+
+```string
+x + 0.333
+```
+
+#### Formatted
+Any Danica object can be formatted previously returning a pre-formatted object
+
+
+```ruby
+value = 1 / 3.0
+expression = Danica.build(:x) do
+  x + value
+end
+
+formatted = expression.tex(decimals: 3)
+formatted.to_s
+```
+
+returns
+
+```string
+x + 0.333
+```
+