Minor README

README.md

@@ -6,12 +6,9 @@ We use this library at GitHub to detect blob languages, highlight code, ignore b
 
 ### Language detection
 
-Linguist defines a list of all languages known to GitHub in a [yaml file](https://github.com/github/linguist/blob/master/lib/linguist/languages.yml). In order for a file to be highlighted, a language and lexer must be defined there.
+Linguist defines a list of all languages known to GitHub in a [yaml file](https://github.com/github/linguist/blob/master/lib/linguist/languages.yml). In order for a file to be highlighted, a language and a lexer must be defined there.
 
-Most languages are detected by their file extension. This is the fastest and most common situation.
-
-For disambiguating between files with common extensions, we first apply
-some common-sense heuristics to pick out obvious languages. After that, we use a
+Most languages are detected by their file extension. For disambiguating between files with common extensions, we first apply some common-sense heuristics to pick out obvious languages. After that, we use a
 [statistical
 classifier](https://github.com/github/linguist/blob/master/lib/linguist/classifier.rb).
 This process can help us tell the difference between, for example, `.h` files which could be either C, C++, or Obj-C.