remove composer.lock (see issue #116) & fix some typos

Author: haeber

.gitignore

@@ -2,3 +2,4 @@ vendor/
 .idea
 .php_cs.cache
 .phpunit.cache
+composer.lock

README.md

@@ -24,7 +24,7 @@ To simplify this experience, set of higher order primitives is introduced in lib
  * `Sum`
  * `Product`
  * `Stringg`
- * `Listt` (a.k.a List Monad, since `list` is a protected keyword in PHP)
+ * `Listt` (a.k.a. List Monad, since `list` is a protected keyword in PHP)
 
 ## Applications
 Known applications of this project
@@ -314,7 +314,7 @@ $this->assertEquals(
 ## Haskell `do notation` in PHP
 Why Haskell's do notation is interesting?
 
-In Haskell is just an "syntax sugar" and in many ways is not needed, 
+In Haskell is just a "syntax sugar" and in many ways is not needed, 
 but in PHP control flow of monads can be hard to track.
 
 Consider example, that use only chaining `bind()`