Add Travis-CI configuration file

* Use Travis, a continuous build service for Linux and OSX builds, to
make sure future commits and contributions can build.
* Add build badge to README.md

Tests, like unit tests, can also be added but this commit only adds a
simple build task by calling "make" on a Linux and OSX environment with
the g++ compiler.

.travis.yml

@@ -0,0 +1,26 @@
+# Run in a container, for speed
+sudo: false
+
+# Enable C++ support
+language: cpp
+
+# Use gcc and g++
+compiler:
+  - gcc
+
+# Test on both Linux and OSX (there's no Windows support)
+os:
+  - linux
+  - osx
+
+# Install project dependencies
+before_install:
+  - |-
+    if [ $TRAVIS_OS_NAME == osx ]; then
+      brew update
+      brew install freetype
+    fi
+
+# Build steps
+script:
+  - make

README.md

@@ -1,4 +1,5 @@
 # Multi-channel signed distance field generator
+[![Build Status](https://travis-ci.org/Chlumsky/msdfgen.svg?branch=master)](https://travis-ci.org/Chlumsky/msdfgen)
 
 This is a utility for generating signed distance fields from vector shapes and font glyphs,
 which serve as a texture representation that can be used in real-time graphics to efficiently reproduce said shapes.
@@ -86,7 +87,7 @@ in order to generate a distance field. Please note that all classes and function
 
  - Acquire a `Shape` object. You can either load it via `loadGlyph` or `loadSvgShape`, or construct it manually.
    It consists of closed contours, which in turn consist of edges. An edge is represented by a `LinearEdge`, `QuadraticEdge`,
-   or `CubicEdge`. You can construct them from two endpoints and 0 to 2 Bézier control points.
+   or `CubicEdge`. You can construct them from two endpoints and 0 to 2 B<EFBFBD>zier control points.
  - Normalize the shape using its `normalize` method and assign colors to edges if you need a multi-channel SDF.
    This can be performed automatically using the `edgeColoringSimple` heuristic, or manually by setting each edge's
    `color` member. Keep in mind that at least two color channels must be turned on in each edge, and iff two edges meet
@@ -163,8 +164,8 @@ The text shape description has the following syntax.
  - Points in a contour are separated with semicolons.
  - The last point of each contour must be equal to the first, or the symbol `#` can be used, which represents the first point.
  - There can be an edge segment specification between any two points, also separated by semicolons.
-   This can include the edge's color (`c`, `m`, `y` or `w`) and/or one or two Bézier curve control points inside parentheses.
-   
+   This can include the edge's color (`c`, `m`, `y` or `w`) and/or one or two B<EFBFBD>zier curve control points inside parentheses.
+
 For example,
 ```
 { -1, -1; m; -1, +1; y; +1, +1; m; +1, -1; y; # }
@@ -173,4 +174,4 @@ would represent a square with magenta and yellow edges,
 ```
 { 0, 1; (+1.6, -0.8; -1.6, -0.8); # }
 ```
-is a teardrop shape formed by a single cubic Bézier curve.
+is a teardrop shape formed by a single cubic B<EFBFBD>zier curve.