changed case for linux builds

Author: NSoiffer

Cargo.toml

@@ -13,12 +13,12 @@ name = "libmathcat_py"
 crate-type = ["cdylib"]
 
 [dependencies.MathCAT]
-path = "../MathCAT/"
+path = "../mathcat/"
 
 [dependencies.pyo3]
 version = "0.15.1"
 features = ["extension-module", "abi3"]
 
 # 32 bit target stable-i686-pc-windows-msvc
 # if changing to building 32 bit python version, change .cargo/config.toml
-#  along with changing env variable PYO3_PYTHON
+#  along with changing env variable PYO3_PYTHON