update slides and .gitignore

Author: ablaom

.gitignore

@@ -1,4 +1,4 @@
-Manifest.toml
+/Manifest.toml
 .ipynb_checkpoints
 *~
 #*

slides/src/slides.tex

@@ -131,7 +131,7 @@
     \begin{itemize}
     \item Written in Julia (but bootstraps off sk-learn):\pause
       \begin{itemize}
-      \item Easier to understand
+      \item Easy access to core algorithms
       \item Easier to customize
       \item Easier to add new performant models
       \item Greater transparency and reproducibility