Adding pdf generation capabilities

_pages/docs/API/coordinates.md

@@ -0,0 +1,34 @@
+---
+title : "API Documentation"
+author_profile: false
+excerpt: "Coordinates"
+header:
+  overlay_color: "#5DADE2"
+permalink: /docs/API/coordinates.html
+sidebar:
+  nav : docs
+---
+
+The Grid is define on a N-dimensional set of integer coordinates. 
+
+The maximum dimension is eight, and indexes in this space make use of the `Coordinate` class.
+The coordinate class shares a similar interface to `std::vector<int>`, but contains all data within the
+object, and has a fixed maximum length (template parameter).
+
+**Example**:
+
+```c++
+const int Nd=4;
+Coordinate point(Nd);
+
+for(int i=0;i<Nd;i++) 
+   point[i] = 1;
+
+std::cout<< point <<std::endl;
+point.resize(3);
+std::cout<< point <<std::endl;
+```
+
+This enables the coordinates to be manipulated without heap allocation or thread contention,
+and avoids introducing STL functions into GPU code, but does so at the expense of introducing
+a maximum dimensionality. This limit is easy to change (`lib/util/Coordinate.h`).