Doc tweaks

Author: RonPieket

README.md

@@ -20,8 +20,8 @@ associative container types that help you organize and query data in memory.
 Intro
 -----
 
-There is a data structure I that has served me very well for many years in the
-Insomniac Core tools group. I don’t hear other programmers refer to it, so I
+There is a data structure I use that has served me very well for many years in
+the Insomniac Core tools group. I don’t hear other programmers refer to it, so I
 want to introduce it to you. I call it a binary relation. It’s a bidirectional
 associative container.
 
@@ -33,7 +33,7 @@ A quick refresher
 -----------------
 
 Binary relations are the association between elements of two sets. It can be
-projected as a set consisting of related pairs (x,y) where x is the input or the
+seen as a set consisting of related pairs (x,y) where x is the input or the
 domain and where y is the output or the range. The notation x R y means that x
 is related to y by R, where R can be the relation that links x and y.
 

docs/index.html

@@ -111,7 +111,7 @@ <h1><a class="anchor" id="autotoc_md1"></a>
 <p>The term “binary relation” and the concept are borrowed from mathematics, specifically set theory. But this is not a library for mathematicians. It is for programmers needing to organize their data.</p>
 <h1><a class="anchor" id="autotoc_md2"></a>
 A quick refresher</h1>
-<p>Binary relations are the association between elements of two sets. It can be projected as a set consisting of related pairs (x,y) where x is the input or the domain and where y is the output or the range. The notation x R y means that x is related to y by R, where R can be the relation that links x and y.</p>
+<p>Binary relations are the association between elements of two sets. It can be seen as a set consisting of related pairs (x,y) where x is the input or the domain and where y is the output or the range. The notation x R y means that x is related to y by R, where R can be the relation that links x and y.</p>
 <p><img src="binary-relations.png" alt="" class="inline"/></p>
 <p>In this library x and y are called left and right, indicating their position in the diagram.</p>
 <p>There are four kinds of binary relations. They are: one-to-one, one-to-many, many-to-one, and many-to-many. But because one-to-many and many-to-one are interchangeable if you swap the left and the right side, we ignore many-to-one. You won’t need it, as will become clear later.</p>