Add a few examples to README

Author: brenhinkeller

README.md

@@ -4,3 +4,35 @@
 [![Dev](https://img.shields.io/badge/docs-dev-blue.svg)](https://JuliaSIMD.github.io/ManualMemory.jl/dev)
 [![Build Status](https://github.com/JuliaSIMD/ManualMemory.jl/actions/workflows/CI.yml/badge.svg)](https://github.com/JuliaSIMD/ManualMemory.jl/actions/workflows/CI.yml)
 [![Coverage](https://codecov.io/gh/JuliaSIMD/ManualMemory.jl/branch/main/graph/badge.svg)](https://codecov.io/gh/JuliaSIMD/ManualMemory.jl)
+
+Manually managed memory buffers backed by NTuples
+
+### Examples
+
+```julia
+julia> using ManualMemory: MemoryBuffer, load, store!, LazyPreserve, preserve, PseudoPtr, Reference
+
+julia> m = MemoryBuffer{4,Float64}(undef)
+MemoryBuffer{4, Float64}((2.283825594e-314, 2.2157350003e-314, 2.216358792e-314, 2.08e-322))
+
+julia> store!(pointer(m), 1.23)
+
+julia> load(pointer(m))
+1.23
+```
+Specifying an existing `NTuple` of data:
+```julia
+julia> s = (1,2,3,4,5);
+
+julia> m = MemoryBuffer(s)
+MemoryBuffer{5, Int64}((1, 2, 3, 4, 5))
+
+julia> load(p)
+1
+
+julia> load(p+sizeof(Int64))
+2
+
+julia> load(p+sizeof(Int64)*2)
+3
+```